1Set RC Model Rocket Altimeter/Barometer with Pressure, Temperature, and Humidity Monitoring; Real-time Altitude Display; Type-C Powered.Item name: model rocket altimeter/barometer.Used for RC model airplane.After powering on the main board, a startup animation progress bar is displayed; once completed, it enters the working interface.Integrates a barometric to measure air pressure, calculate altitude, and detect temperature and humidity—all data is shown on the screen.Working interface displays: Alt (real-time altitude), level altitude, Pres (current ambient air pressure), Temp (temperature), Hum (humidity); data updates with the environment.When altitude exceeds 1m, the screen shows "LAUNCH"; when altitude is below 1m, it shows "".Compatible with 9V power input.Can be powered via Type-C phone charger.Easy to assemble.Highly portable.Package includes: 1 set x altimeter module. Disclaimer: This is not an part.References to brands or models are used only to illustrate compatibility.