Item Type: ExpressLRS Micro Receiver_x000D_ Material: ABS_x000D_ Size: Approx. 19x32x6mm / 0.75x1.26x0.24in_x000D_ Number of Channels: 5 CH_x000D_ Operating Voltage: +5V~9V DC_x000D_ Receiving Protocol: PWM, CRSF Switchable_x000D_ Frequency Band: 2.4Ghz1Professional Design: ELRS receiver with PWM output. Supports 5 PWM outputs. It also supports flash CRSF output firmware, when CH2 corresponds to TX and CH3 corresponds to RX. 2Failsafe: In case of connection or signal loss between the radio transmitter and receiver, the failsafe function adjusts all channels to the user set failsafe value, maximizing safety and preventing flyaways. 3Cautions: If you are not using a flight controller, such as an RC fixed wing, it is necessary to set the fail safe values correctly. 4Widely Applicable: ExpressLRS micro receiver module is suitable for fixed wing, helicopter, RC car, boat and many other types of models. 5Lightweight and Compact: ELRS micro receiver is light weight, 19x32x6mm / 0.75x1.26x0.24in size can be easily placed in most model nacelles, plug and play. The design with housing is more simple and convenient.Please allow some error in manual measurement.1 x_x000D_ _x000D_ ExpressLRSMicroReceiver