1. Channel: 2 channels 2. Frequency: 2.4G 3. Receiver operating voltage: 12-24V 4. Receiver operating current: 18mA 2 5. Working voltage of USB plug: 5V DC USB plug working current: 1mA 0.5 USB plug memory quantity: 340pcs Distance: Insert the USB plug into the car for 10m Function of automatic door receiver: This receiver and USB plug set can be used for sliding door motors, swimming door motors, garage doors, and boom guardrails. People can install the receiver into their door motor and match the code for the receiver and USB plug. When people drive a car with a USB plug inserted into the USB charging port, the car door automatically open within 10 meters. If the door motor has an automatic closing function, the rear door of the car automatically close when entering. Color: Black Material: ABS Package Contents: 1 set x Garage Door Opening 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.