Support ExpressLRS V3.3 firmware and compatible with multiple models of remote controllers,ELRS 1W tuner supports all Open TX remote controllers such as Radiomaster, helloradio, jumper, Radiodyne closed-source remote controllers T16D, T12D, AT9SPro*, and FUTABA.(Note: AT9SPro, AT1011 and other remote controllers without JR compartment do not support ELRS 1W direct plug-in and need to be installed by yourself). Stable data transmission,Provide users with more reliable connections and more stable data transmission.Whether indoors or outdoors, it can provide a reliable and stable control experience. Built-in high-efficiency cooling fan,Built-in efficient heat dissipation system, independent heat dissipation duct, when the power exceeds 250mW, the fan automatically starts and the speed is constant. 1W power working for a long time without getting hot.(When the default power exceeds 250mW, the fan will automatically start. You can also adjust the power that triggers the fan to start through the script). Power supply range,5-12.6V DC (2-3S) power supply range.(Does not support 4S and above ( Greater than 12.6V) battery power supply, otherwise it will cause permanent damage to the tuner) USB online upgrade,ELRS 1W can be connected to a computer via the Type-C interface for upgrading. The USB flash drive mode allows for simple operation, allowing for easy upgrading and synchronization of the latest functions. Hign-concerned Chemical:None Model Number:ELRS For Vehicle Type:Cars Use:Vehicles & Remote Control Toys Spread Spectrum:ExpressLRS Frequency:2.4GHz Signal:ELRS Input Voltage:5-12.6V Power:25mW/50mW/100mW/250mW/500mW/1W Connection:Support WiFi or Bluetooth connection Fan:Built-in high-efficiency cooling fan Antenna:2.4G Rod Antenna USB Port:Type-C Firmware Version:ExpressLRS 3.3.0 Compatible Transmitter:All the Open TX and part of the closed-source remote controls such as T16D, T12D, AT9S Pro, T16IZ, T16SZ, T18SZ, ET16, etc Colour:As Shown Material:ABS Due to different batches, there may be differences in product appearance and printed text, which will not affect use Package Contents: 1 * elrs module 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.