LD2411 is a human distance sensing and gesture recognition module that can recognize the user's gesture lifting and lowering actions, as well as detect the user's actions of entering and exiting the toilet. It outputs GPIO signals through the detected actions, allowing the manufacturer's single-chip microcomputer to control the opening and closing of the toilet lid. The module is powered by 5V, and the radar beam adopts a wide and narrow alternating design. The horizontal angle (4 patches) is about 20°, and the vertical angle is 40°. The antenna placement direction is adjusted according to the scene. For toilet applications, it is recommended to use a narrow horizontal beam to avoid false triggering when the human body passes by. The LD2411 module integrates 24G radar and BLE5.0 Bluetooth, with low unit price and high cost performance. It has mature cases in smart toilets and can realize functions such as automatic switch by sensing the human distance, gesture recognition control, and smart flip. In addition to its application in smart toilets, it can also be well applied in other smart home appliances, smart lighting, etc., such as gesture switch lights, non-contact screen lighting and other application scenarios. Colour:Blue Material:ABS Package Contents: 1 x 24GHz Toilet gesture recognition switch 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. 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.