-SR12 is a receiver that uses ANT protocol to support 12 PWM channel signal output It has dual antennas and supports two-way transmission and return functions t has a compact design and can be used with a variety of models It supports the ANT protocol Product model: -SR12 Applicable transmitter: ANT protocol transmitter (such as -ST8, etc.) Suitable models: fixed-wing, helicopter, glider, wing, multi-, Flying drone, engineering vehicle, ship model, robot or car model Number of PWM channels: 12 Wireless frequency: 2.4GHz ISM Transmit power: less than 20dBm Wireless standard: ANT Channel resolution: 4096 levels Antenna type: dual antenna Remote control distance: 1500 meters (open and interference-free air distance) Input power: 3.5~9V/DC Working current: 70mA/5V Output data: PWM/PPM/i-BUS/S.BUS Online update: supported Temperature range: -10℃ ~ +60℃ Colour:Black Material:plastic Package Contents: 2 x Receiver 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.