Currently, most car trunks on the market need to be opened with a key or a manual button. When the owner holds a large item in the trunk, they need to place the item on the ground and then open the trunk by hand, which is inconvenient to operate. This product solves the above problems and is installed inside the rear tailgate of the car and emits microwaves downward for detection. If the sensor detects an effective kick within the detection area, it outputs a corresponding level signal according to the signal strength. Control the opening of the tail box. Normal mode: Approach the foot of the bumper detection area and then leave the bumper detection area. When this action is completed, a trigger signal will be generated. Abnormal reasons: stairs, stones, branches, bumps, plastic bottles, car washes, etc., no trigger signal is generated Universally used in all cars Installation Notes: 1. Find the correct position on the rear guard of the vehicle. 2. Wipe the sensor installation