This is a universal 433.92MHz receiver designed to be compatible with most remote controls on the market. It can learn and store both fixed and rolling code 433.92MHz remote controls separately or simultaneously. The device supports most 433.92MHz fixed and rolling code remotes. The 2-channel receiver allows control of two gate automation systems or alarm systems at the same time. Specifications: - Power supply: 12V–24V DC - Frequency: 433.92MHz - Code compatibility: Works with fixed, learning, and rolling code remotes - Channels: 2 - Operating temperature: -40°C to +80°C - Built-in antenna: Reception range up to 10–100 meters Programming Instructions – Momentary Working Mode: 1. Learning a transmitter code: Press and release "Learn 1" or "Learn 2" for one second until the LED lights up. Press the button on the transmitter until the LED flashes and turns off. The code is now stored. Repeat for additional transmitters. 2. Erasing stored codes: Press and hold "Learn 1" or "Learn 2" until the LED turns off. All stored codes will be erased. Terminal Labels: - ANT: Receiver Antenna - CH1: Relay Output 1 - CH2: Relay Output 2 - V+: Voltage Positive - GND: Ground Color: Grey Material: Plastic Package Contents: 1 x Garage Door Receiver Note: Other items shown are not included. Due to lighting effects and monitor settings, the actual color may vary slightly from the image. Measurement may vary by 1–3 cm.