Support ExpressLRS V3.3 firmware and compatible with multiple models of remote controllers,ELRS 1W tuner supports all Open TX remote controllers such as , 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 mission,Provide users with more reliable connections and more stable data mission.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, 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 hot.(When the default power exceeds 250mW, the fan automatically start. You can also adjust the power that triggers the fan to start through ). Power supply range,5-12.6V DC (2-3S) power supply range.(Does not support 4S and above ( 12.6V) battery power supply, otherwise it 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 Spect :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 mitter: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 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.