1,USES: Plug the door opener sensor into the USB port of your car to send out the sensor signal. The motor automatically opens the car door after receiving the signal. 2,SMALL AND EASY TO USE: USB is directly inserted into the car to be used, simple operation, easy to use, small size, does not take up space in the car. 3,2 CONTROL MODES: The control modes of this USB type door remote control have automatic mode and manual mode, one key to open the door automatically. 4,EXCELLENT ACCESSORY: USB door opener remote control is an excellent accessory for automatic door operators, durable and easy to replace. 5,PLASTIC MATERIAL: The door opener USB sensor remote control is made of plastic material, sturdy and wear‑resistant, can be used for a long time. Item Type: USB automatic door opener Material: Plastic Size: Approx.57 x 24 x 10mm or 2.2 x 0.9 x 0.4in Voltage: 5V Interface: USB Control mode: automatic mode, manual mode 1 x USB Automatic Door Opener Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store