AVRT9 is the latest APRS TNC launched (supports APRS tracking, DIGI, IGATE, Messages), which is operated and configured by 5 buttons and supports firmware upgrades. Main interface: You can switch to display the current beacon, GPS satellite list, GPS speed, and after the test UI interface is turned on, you can display the WIFI connection status. Beacon list: AVRT9 record the reception time of each beacon, display 5 per screen, and scroll to record up to 149 beacons. The beacon displays distance, direction, GPS coordinates, altitude, speed, heading, path and other information. Beacons support time intervals, distance intervals and smart beacons Serial port supports output UI/KISS/ 1.54-inch OLED display, which can be clearly displayed even in direct sunlight outdoors. Built-in VHF module (0.5/2W output adjustable), receiving and transmitting frequency range 136-174MHz. Built-in APRS decoding chip, hard decoding protocol AX.25, rate 1200BPS. Built-in GPS, receive satellite signals to obtain coordinates. Built-in Bluetooth module, support aprsdroid. Built-in WIFI module, can receive APRS data packets, decode and upload to the server, and also support uploading local GPS tracks directly to the server. Built-in temperature sensor, can detect the temperature of the VHF module, can also be moved outdoors to detect the ambient temperature. Built-in buzzer, can be set to output buzzer sound prompts when receiving decoding/transmitting. Built-in lithium battery 3.7V/2500MAH (tested to turn on GPS/BT and use smart beacons for 10 hours). Use USB-C to charge. 5V1A. Color: Black Material: ABS Package Contents: 1 * AVRT9 Positioning Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.