Fly Sky GMR 2.4 G Hz 4CH AFHDS 3 Micro RC Receiver PWM Output Compatible PL18 NB4/ Lite for RC Car OVERVIEW:GMr is a 4-channel micro/mini car receiver, using AFHDS 3 (third-generation automatic frequency hopping digital system), single external antenna bidirectional transmission, micro size & reserved gyro interface. Description: Brand Name: Fly Sky Item Name: GMR Receiver Dimensions: 23.5*13.5*7mm Weight: 1.7g Model: GMRPWM Channel: 4 Wireless Frequency: 2.4 G Hz Wireless Protocol: AFHDS 3 Range: 50m (Ground) Antenna Type: single antenna (32mm) Power: 3.5-9VRSSI: Supported Data port: PWMTemperature range: -10 ℃ — + 60 ℃ Humidity range: 20% -95% Online Update: Yes Certification: CE, FCC ID: N4ZGMR00 The receiver is compatible with PL18/NB4 & NB4 Lite all of transmitters which with AFHDS 3 protocol. Binding:1. Press & hold the receiver Bind button while powering on the receiver, then release button after powering on.- The receiver's LED flash quickly indicating that it has entered bind mode.2. Put the transmitter into bind mode. (See the transmitter's instruction manual for more information)3. Binding is successful when the receiver's LED stop flashing.- If the transmitter is one-way transmission, manually exit the transmitter when the receiver status indicator flashes slowly, Binding is successful when the receiver's LED stop flashing.4. Check to make sure that the transmitter & receiver are working as expected, if there are any issues or unexpected operation follow the steps above to bind agai