AirCheck® G3 Pro
Wireless Tester
The AirCheck G3 Pro is a hardware-enabled wireless analysis and site survey solution for WiFi and Bluetooth/BLE networks. Its intuitive user interface provides actionable intelligence, simplifying and speeding up wireless security audits, network deployment, troubleshooting, and validation.
Key features:
- Test, verify, and troubleshoot WiFi networks and Bluetooth/BLE devices with advanced testing apps and purpose-built hardware.
- Faster and easier WiFi and Bluetooth/BLE site surveys with AirMapper™ Site Survey app.
- Validate WiFi network performance on the 2.4GHz, 5GHz, and 6GHz bands for critical services and key end devices.
- 2.4GHz and 5GHz spectrum analysis with the optional NXT-1000 Portable Spectrum Analyzer.
- Enables remote engineers to troubleshoot and collaborate with on-site technicians with cloud remote control in Link-Live™.
With powerful tools suited for wireless engineers, but ease of use for technicians and remote “smart hands”, AirCheck G3 Pro makes your entire team more productive.
Key Features
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2.4GHz and 5GHz WiFi spectrum analysis
Using the optional NXT-1000 Portable Spectrum Analyzer adapter you can detect sources of WiFi interference like RF jammers and microwave ovens.
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Automatically discover and map your wired and wireless networks
Generate network topology maps and identify network changes via Link-Live, allowing you to discover wireless security threats and keep network documentation up to date.
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Faster and easier WiFi and Bluetooth/BLE surveys with AirMapper™ Site Survey
Supports both active and passive surveys to help validate client performance and roaming. Create and share visual heatmaps* of key performance metrics via Link-Live™ or AirMagnet® Survey PRO.
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Remote problem solving and collaboration
The AirCheck™ G3 Pro enables remote engineers to diagnose WiFi network performance problems and collaborate with on-site technicians using cloud remote control via Link-Live™.
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Streamline your network management
Seamlessly consolidate and manage field test data and integrate with network management systems via Link-Live™ collaboration, reporting, and analysis platform.
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Advanced testing apps and purpose-built hardware
Quickly test, verify, and troubleshoot technology upgrades, WiFi networks, and Bluetooth/BLE devices with advanced testing apps and purpose-built hardware.
*An active AllyCare Premium Support contract or a Link-Live Enabled Features subscription is required for in-depth AirMapper visualizations and filtering, automatic problem identification via InSites™ intelligence, detailed topology map controls, and advanced reporting options in Link-Live.
How to use a Portable WiFi Analyzer?
Test it yourself and see how easy it is to use an AirCheck G3 Pro. Click on the orange dots to explore.
Home Screen
The AirCheck G3 has a dedicated set of WiFi test and management radios which support remote control and testing, and a Bluetooth/BLE radio. Third-party apps downloaded from the Link-Live collaboration, reporting, and analysis platform can use these interfaces for testing and communication purposes.
Benefits:
As a lightweight, handheld, ruggedized instrument, AirCheck G3 is perfect for remote site validation and troubleshooting, eliminating the need to purchase multiple testers, or the need to carry a fragile laptop or tablet. Apps make the user’s workflow more efficient by expanding the usage of the instrument beyond testing, allowing the user to check trouble tickets, run speed tests, configure networked devices, and complete other tasks with its smart tester features.
AutoTest
AutoTest is the most comprehensive NetAlly testing app on the AirCheck G3. It allows you to quickly run a variety of test types and save their configurations and network credentials for access whenever you need them. The app is fully customizable with test “profiles” for WiFi network connections, wireless air quality, and individual “test targets” that can run with any profile.
In the Periodic AutoTest mode, AutoTest runs at specified intervals (from 1 minute to 24 hours) and sends the results to Link-Live to view the results over time. This is an effective way to monitor aspects of your network for an extended period, or to help diagnose intermittent issues without having to manually execute multiple tests.
Benefits:
AutoTest allows engineers to transfer their knowledge of network configurations to the instrument, empowering frontline technicians to run tests against various WiFi SSIDs with minimal training. The result is a repeatable, documented tests with shortened overall test times, which otherwise would not be possible with other methods.
Wireless Network Test
The Wireless Network Test profile verifies signal strength, connection rate, 802.1x authentication, shows Channel Utilization, provides AP information, tests for DHCP/DNS/Gateway response, and verifies connectivity (using Ping, TCP Connect, HTTP and FTP) to an unlimited number of test targets. Users can tap on each card to see more details and click the purple floating action button to attach the connection log or add comments to the test results.
Benefits:
With pre-programmed wireless test profiles with Pass/Fail thresholds, and advanced SSID visibility, it is easy for technicians to test various wireless network configurations with minimal training. The test results, along with connection log and comments, can be uploaded to Link-Live for automated documentation and analysis by remote experts.
Ping/TCP Test
For key servers/services residing on-prem or in the cloud, engineers can pre-define tests and thresholds to verify their connectivity and performance using ping, TCP connect, HTTP, or FTP.
Benefits:
Continuous testing with response time measurements is available to verify consistency and identify intermittent issues. These tests can be easily recalled by field technicians to reduce configuration time or mistakes, to get more done faster.
WiFi Packet Capture
You can capture up to WiFi 6 traffic on the 2.4/5/6GHz bands to create a PCAP file of up to 1Gigabyte. Packet slicing and filtering are supported, and PCAP files can be uploaded to Link-Live for easy sharing.
Benefits:
With its compilation of WiFi troubleshooting tools, the AirCheck G3 makes it quick and simple to identify the root cause of WiFi network problems.
Network Discovery
The AirCheck G3 automatically discovers your network through its set of WiFi interfaces immediately upon power-up.
Devices are classified and correlated to provide complete visibility of their name and device type, network addresses, VLAN, SSID, and where available, traffic statistics. Engineers can add names and authorization status for devices discovered. Discovery results can be directly uploaded to Link-Live for detailed analysis of devices discovered with filter and sort tools, topology mapping, or export to CSV/PDF files as documentation.
Benefits:
The AirCheck G3 breaks the layer 2 visibility ceiling and makes it easy to discover the actual identity of a WiFi device by showing its name and IP address while most other WiFi tools only show the MAC address.
WiFi Channel Map
The WiFi channels map provides a visual representation of 802.11 utilization and non-802.11 utilization for each channel on the 2.4/5/6 GHz bands. It also shows number of APs, number of Clients, retry percentage, and number of illegal devices for each channel.
Benefits:
Quickly determine if channels are over-utilized with WiFi traffic and/or with non-WiFi interference and noise. You can also gain visibility on the level of WiFi traffic and interference over the last 60 seconds on a selected channel, as well as the access points and clients using this channel.
WiFi Device Details
The AirCheck G3 automatically discovers your network through its dual set of WiFi radios immediately upon power-up. The discovery provides quick security and health audits of the network devices across all WiFi channels.
Devices are classified and correlated to provide complete visibility of their name, network addresses, SSID, device type, configuration, and where available, traffic statistics. Engineers can name and set authorization status for devices discovered. Discovery results can be directly uploaded to the complimentary Link-Live Cloud Service for storage, conduct detailed analysis of devices discovered with filter and sort tools, or export to CSV/PDF files as documentation.
Benefits:
The AirCheck G3 correlates the discovery results from the WiFi networks and breaks the layer 2 visibility ceiling. AirCheck G3 makes it easy to discover the actual identity of a WiFi device by showing its name and IP address while most other WiFi tools only show the MAC address.
WiFi Troubleshooting Tools
The AirCheck G3 WiFi device discovery automatically detects problems. It shows possible cause(s), and it has integrated WiFi troubleshooting tools to investigate further and get to root cause.
• Packet Capture: You can capture WiFi 6 traffic on the 2.4/5/6GHz bands to create a PCAP file of up to 1Gb. Packet slicing and filtering are supported, and PCAP files can be uploaded to the Link-Live Cloud Service for easy sharing.
• Connection Test: Verifies connection and authentication to selected networks on the 2.4/5/6GHz bands. It checks the connected channel utilization, tests for DHCP/DNS/Gateway response, and validates connectivity to multiple test targets.
• Roaming Test: In the WiFi link test graphs as well as in active test graphs, anytime the AirCheck G3 roams and connects to a new AP, a red vertical line will be shown in the graph. Seeing the correlation between various factors and the roam can help diagnose roaming successes as well as failures.
• Locate: Simplifies the process of physically locating both AP and Client devices by measuring their signal strength. Making it easier to find rogue devices or locate APs that need to be replaced.
Benefits:
With its compilation of WiFi troubleshooting tools, the AirCheck G3 makes it quick and simple to identify the root cause of WiFi network problems.
Path Analysis
Path Analysis traces the connection points, including intermediate switches and routers, between the AirCheck G3 and a destination URL or IP address. Path Analysis uses SNMP queries to identify issues such as overloaded interfaces, overloaded device resources, and interface errors. It also shows how devices within your network (and off-net devices) are connected.
The Path Analysis app can test through any one of the two network interfaces that have established a connection to the network and have an IP address.
Benefits:
AirCheck G3 has the unique ability to break through the “visibility ceiling” between WiFi and wired networks, showing who and what is on your network, where they are connected, and their path across your network.
iPerf Performance Test
The AirCheck G3 uses iPerf v3 to run performance tests against the NetAlly Test Accessory or any iPerf v3 server. Performance can be measured using TCP or UDP throughput in the upstream or downstream direction.
Benefits:
The iPerf app verifies SLA of critical network links that support critical devices like servers, network-attached-storages, and high-speed WiFi access points, ensuring you are getting the bandwidth you expect.
AirMapper™ Site Survey for
WiFi & Bluetooth/BLE
With AirMapper, AirCheck G3 users can quickly and easily gather location-based WiFi and Bluetooth/BLE measurements and create visual heat maps of key performance metrics in the Link-Live collaboration, reporting, and analysis platform or AirMagnet Survey PRO.
Automatically push pre-configured and calibrated floorplans from Link-Live to testers in the field. Then touch START to begin the survey. Tap at various points on your floor plan to collect data and when done, tap STOP, then touch the save icon to send your results to Link-Live for sharing and analysis.
Benefits:
Faster and easier than using a laptop or tablet with an attached dongle or tethered device, AirMapper is ideal for quick site surveys of new deployments, change validation, and performance verification. The ease and portability of this solution enables technicians to quickly troubleshoot or validate WiFi and Bluetooth networks by measuring the real-world experience of mobile device users.
Spectrum Analysis
Trying to find the source of WiFi interference on a wireless network is hit or miss with the wrong tools. Using the optional NXT-1000 Mobile Spectrum Analyzer, AirCheck G3 offers a view of RF interference in the 2.4 GHz and 5.0 GHz bands and its impact on the wireless network’s overall performance. Key graphs and charts include:
• Real-Time Spectrum - Provides a live RF view including current, average and max readings.
• Frequency Spectrum – Displays heat mapped signal density to identify recurring energy.
• Spectrogram – Commonly called a “Waterfall”, it shows energy over time to identify the periodic nature of the RF environment.
Benefit:
Simplifies interference troubleshooting and location by providing visibility into the 2.4GHz and 5.0GHz spectrum bands, plus helps secure the WiFi network by inspecting No Wireless Zones and detecting and locating intentional RF interference sources such as RF jammers.
Capabilities
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AirCheck G3 AutoTest Profiles
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WiFi Analysis, Roaming & Automated Problem Detection
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AirMapper Wireless Network Mapping App
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Network Discovery, Path Analysis & Security Audits
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WiFi Performance, Captures & Spectrum Analysis
The AirCheck G3 Pro provides AutoTest profiles with best practice pass/fail thresholds for quick assessment of WiFi network configurations and services.
- Multiple Profiles
Can be created for complex WiFi networks with multiple SSIDs, each with its own set of services tests. Profiles can then be organized into named profile groups that allow one button validations across multiple SSIDs, bands and authentications. With profile groups, engineers can effectively transfer their network configuration and test knowledge to technicians, saving training time and effort.
- Air Quality Test
Is it the network? Find out fast with the Air Quality Test. A quick scan of the channels in your wireless network measures channel utilization and interference (co-channel and adjacent channel), allowing you to instantly identify WiFi network performance problems.
- Periodic AutoTest
In this mode, AutoTest can run multiple test profiles at specified intervals and sends the results to Link-Live to analyze the results over time. This is an effective way to “monitor” connectivity of your WiFi network for an extended period and diagnose intermittent issues without having to manually execute multiple tests.
Native WiFi 6 and 6GHz Support
With the introduction of WiFi 6 and the 6GHz band, how WLAN validation and troubleshooting is done has changed – necessitating new technology to test and validate these networks.
- Validate actual WiFi network performance and utilization using a native 802.11ax radio
- Gain visibility into wireless security threats on the 2.4GHz, 5GHz, and 6GHz bands
- Enables packet captures of WiFi 6 control, management, and data frames in all 3 bands
- Diagnose new WiFi and 6Hz mechanisms of Reduced Neighbor Reports, Preferred Scanning Channels, and multi-BSSID
- Authenticate using the WPA3 and Enhanced Open security standards
Roaming Analysis
In the WiFi link test graphs anytime the AirCheck G3 Pro roams and connects to a new AP, a green vertical line will be shown in the graph. Seeing the correlation between various factors and roam events can help diagnose roaming issues. Paired with the Connect Log, engineers can determine the exact step in the process that may be causing the failure.
Automated Problem Detection
AirCheck G3 automatically diagnoses various conditions on wireless networks and identifies specific problems which can be sorted by severity or time detected. Drill in to see a detailed description of the problem and recommended course of action to mitigate.
NOTE: Users of AirMagnet® WiFi Analyzer (now obsolete) will find the combination of WiFi 6 and 6GHz support, roaming analysis, and automated problem detection in a handheld instrument with in-depth WiFi analytics an ideal replacement.
With the AirMapper app, AirCheck G3 users can quickly and easily gather location-based WiFi and Bluetooth/BLE measurements and create visual heat maps of key performance metrics in the Link-Live collaboration, reporting, and analysis platform. Simple to use, the AirMapper app is ideal for quick site surveys of new deployments, change validation, and performance verification.
Survey project management capabilities in Link-Live provide a major boost in productivity and collaboration for distributed teams conducting surveys at remote sites. A team lead can create a project in Link-Live, upload and calibrate the floor plan, then automatically push the configured project out to the desired remote analyzers.
- Faster and easier WiFi and Bluetooth/BLE site surveys with a rugged handheld analyzer
- Automatically identify common WiFi network problems using InSites™ intelligence analysis in Link-Live
- Collaborate – easily visualize and share survey data through Link-Live
- Simultaneous passive and active WiFi surveys to gather critical site metrics and validate client experience and roaming with one survey
- Export WiFi survey data to AirMagnet® Survey PRO for more advanced analysis, planning and reporting
Instantly see what is on the network and where it is connected. Quickly investigate and locate “suspect” devices and identify problems associated with device misconfigurations.
- Discovers network devices across multiple VLANs and WiFi SSIDs.
- Discovery Difference analysis in Link-Live exposes possible security risks in the network infrastructure by showing changes in connected devices.
- Powerful filter and sort function with automatic problem detection identifies issues such as:
- Duplicate IPs, congested switch ports, and oversubscribed WiFi channels/SSIDs.
- Security threats, such as unknown clients and switches, or access points with open authentication.
- Path Analysis shows the switch/router path to any connected device.
- Batch authorization workflow makes it easy to identify known vs. unknown devices, enabling “who’s on my network” auditing.
Diagnose WiFi performance, and easily capture packets for detailed application analysis.
- Simultaneously generate and measure IP-based traffic using two WiFi radios
- Supports popular iPerf network throughput testing for WiFi networks
- Capture wireless traffic to PCAP files for escalation evidence or analysis, with simple but powerful filtering and slicing controls
Using the optional NXT-1000 Mobile Spectrum Analyzer, AirCheck G3 Pro offers a view of RF interference in the 2.4 and 5GHz bands and its impact on the wireless network’s overall performance. Users of AirMagnet® Spectrum XT (now obsolete) will find the combination of spectrum visibility in a handheld instrument with in-depth WiFi analytics an ideal replacement.
Models & Accessories
IMPORTANT NOTES: WiFi regulatory compliance implementation of the 6GHz spectrum varies by country.
AirCheck G3 Pro models are available in three versions: Full Tri-Band (capability across the entire 6GHz band), Partial Tri-Band (capability for only certain channels in the 6GHz band as determined by 802.11d regulatory domain information), and Dual Band Only (for countries where operation in the 6GHz band is not allowed.) Be sure to select the model that is certified for use in your specific country. Please contact your NetAlly reseller for more information.
The models shown on the table below are for the “Full Tri-Band” version. Replace “AIRCHECK-G3-PRO” with the following for the other model types:
AIRCHECK-G3E-PRO Partial Tri-Band
AIRCHECK-G3C-PRO Dual Band Only (2.4/5GHz)
| Model Number/Name | Description |
| AIRCHECK-G3-PRO | Includes: AIRCHECK-G3-PRO mainframe with 1 year of AllyCare support (AIRCHECK-G3-PRO-1YS), shoulder sling bag, AC charger, Quick Start Guide.  |
| AIRCHECK-G3-PRO-KT | Includes: AIRCHECK-G3-PRO mainframe with 1 year of AllyCare support (AIRCHECK-G3-PRO-1YS), shoulder sling bag, AC charger, Quick Start Guide, external directional antenna, holster, and NXT-1000 spectrum analyzer.  |
| AIRCHECK-G3-PRO-TKT | Includes: AIRCHECK-G3-PRO mainframe with 1 year of AllyCare support (AIRCHECK-G3-PRO-1YS), shoulder sling bag, AC charger, Quick Start Guide, external directional antenna, holster, NXT-1000 spectrum analyzer, and Test Accessory.  |
| TEST-ACC | (1) Test Accessory for use with AirCheck G3, EtherScope nXG, LinkRunner AT 4000, or LinkRunner 10G. It can also act as an independent iPerf server.  |
| TEST-ACC-5PK | (5) Test Accessory for use with AirCheck G3, EtherScope nXG, LinkRunner AT 4000, or LinkRunner 10G. It can also act as an independent iPerf server.  |
| TEST-ACC-10PK | (10) Test Accessory for use with AirCheck G3, EtherScope nXG, LinkRunner AT 4000, or LinkRunner 10G. It can also act as an independent iPerf server. |
| EXT-ANT-TRIBAND | 2.4/5/6GHz directional antenna for use with AirCheck G3 and EtherScope nXG  |
| NXT-1000 | NXT-1000 Portable Spectrum Analyzer  |
| G3-PWRADAPTER | AC Charger Replacement  |
| HOLSTER-G3 | Field use carrying holster makes troubleshooting on the go easier. Openings allow access to all applicable buttons and interfaces.  |
Documents
Datasheet
| Title/Description | Download |
|---|---|
AirCheck G3 Pro Wireless Analyzer Data Sheet | Download |
Flyers
| Title/Description | Download |
|---|---|
AirCheck G3 Pro Wireless Analyzer Product Flyer | Download |
AirCheck G3 Pro vs. EtherScope nXG Product Comparison | Download |
AirCheck G3 Pro vs. AirCheck G2 Product Comparison Flyer | Download |
AirMapper Site Survey Product Flyer | Download |
NXT Portable Spectrum Analyzer | Download |
AirMapper Ecosystem Flyer | Download |
NetAlly Product Selection Guide | Download |
AllyWare Common Technology Guide | Download |
AllyCare Premium Support Services Flyer | Download |
Brochure
| Title/Description | Download |
|---|---|
NetAlly Corporate Product Brochure | Download |
Manuals
| Title/Description | Download |
|---|---|
AirCheck G3 Pro Quick Start Guide | Download |
AirCheck G3 Pro User Guide v2.7 (English) | Download |
AirCheck G3 Pro User Guide v2.6 (Simplified Chinese) | Download |
AllyWare™ v2.7.1 Release Notes | Download |
Compliance and Safety Guide (English) | Download |
Compliance and Safety Guide (Multilingual) | Download |
Specifications
| General | |
| Dimensions | 4.98 in x 7.68 in x 1.65 in (102 mm x 196 mm x 42 mm) |
| Weight | 1.05 lbs. (0.48 kg) |
| Battery | Rechargeable lithium-ion battery pack (3.63 V, 9.75 A, 35.39 Wh) |
| Battery Life | Typical operating life is 10 hours (Battery life from full charge varies depending on the feature being used); Typical charge time is 3-4 hours. |
| Display | 5.0-inch color LCD with capacitive touchscreen (720 x 1280 pixels) |
| Host Interface | 2 USB Type-A Ports USB Type-C Power and On-the-Go Port RP-SMA External Antenna Port |
| Memory | Approximately 8 GB available for storing test results and user applications |
| Charging | USB Type-C 45-W adapter: AC Input Power 100-240 V, 50-60 Hz; DC Output Power 15V (3A) |
| Wireless | |
| AirCheck G3 has two internal WiFi Radios: | Testing – 2×2 Tri-band 802.11ax wireless radio (IEEE 802.11a/b/g/n/ac/ax compliant) Management – 1×1 Dual-band 802.11ac Wave 2 + Bluetooth 5.0 and BLE wireless radio (IEEE 802.11a/b/ g/n/ac compliant) |
| Specification Compliance | IEEE 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax |
| WiFi Connectivity | 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax |
| Operating Frequencies | Frequencies of channels received and transmitted: 2.4 GHz band: 2.412 to 2.484 GHz (channel 1 to channel 14)* 5 GHz band: 5.170 to 5.320 GHz, 5.500 to 5.700 GHz, 5.745 to 5.825 GHz (channel 36 to channel 165)* 6 GHz band: 5.925 to 7.125 GHz (channel 1 to channel 233)* (*) Where allowed by country regulations. NOTE: The tester transmits only on the frequencies allowed in the country where it is operating. |
| Antennas | |
| Internal WiFi Antennas | Minimum gain 2.0 dBi peak in the 2.4 GHz band, 1.5 dBi peak in the 5 GHz band, and 2.7 dBi peak in the 6 GHz band. |
| External Directional Antenna | Antenna, frequency range 2.4 to 2.5 GHz, 4.9 to 5.9 GHz. and 6.0 to 7.1 GHz Minimum gain 6.4 dBi peak in the 2.4 GHz band, 8.9 dBi peak in the 5 GHz band, and 8.6 dBi peak in the 6 GHz band. |
| Environmental | |
| Operating Temperature | 32°F to 113°F (0°C to +45°C) NOTE: The battery will not charge if the internal temperature of the device is above 95°F (35°C) |
| Operating relative humidity (% RH without condensation) | 90% (50°F to 95°F; 10°C to 35°C) 75% (95°F to 113°F; 35°C to 45°C) |
| Storage temperature | -4°F to 140°F (-20°C to +60°C) |
| Shock and vibration | Meets the requirements of MIL-PRF-28800F for Class 3 Equipment |
| Safety | IEC 61010-1:2010: Pollution degree 2 |
| Altitude | Operating: 4,000 m; Storage: 12,000 m |
| EMC | IEC 61326-1: Basic Electromagnetic Environment CISPR 11: Group 1, Class A |
Certifications and Compliance
- Conforms to relevant European Union directives.
- Conforms to relevant Australian Safety and EMC standards.
- Complies with 47 CFR Part 15 requirements of the U.S. Federal Communications Commission.
- Listed by the Canadian Standards Association
Support
NOTE: All new AIRCHECK-G3-PRO mainframes are sold with the first year (1 year) of AllyCare support included. Additional year(s) of support may be added. Product registration and activation is required within 30 days of first power-on.
Certain features and capabilities of this product are enabled by having an active AllyCare Support services contract. For more information about this product’s AllyCare enabled features please click here. At the end of your existing contract, you must renew your AllyCare Support contract to continue utilizing the features described.
Use these support model numbers for extending support at time of purchase or for support renewal.
| Model Number/Name | Description |
| AIRCHECK-G3-PRO-1YS | 1 year AllyCare support for all AIRCHECK G3 PRO models, including “E” (Partial Tri-Band) and “C” (Dual Band only) SKU’S: AIRCHECK-G3-PRO, AIRCHECK-G3-PRO-KT, AIRCHECK-G3-PRO-TKT. |
| AIRCHECK-G3-PRO-2YS | 2 years of AllyCare support for all AIRCHECK G3 PRO models, including “E” (Partial Tri-Band) and “C” (Dual Band only) SKU’S: AIRCHECK-G3-PRO, AIRCHECK-G3-PRO-KT, AIRCHECK-G3-PRO-TKT |
| AIRCHECK-G3-PRO-3YS | 3 years of AllyCare support for all AIRCHECK G3 PRO models, including “E” (Partial Tri-Band) and “C” (Dual Band only) SKU’S: AIRCHECK-G3-PRO, AIRCHECK-G3-PRO-KT, AIRCHECK-G3-PRO-TKT |