1Automatic Sensor: The flusher has a built in sensor that controls flushing according to the frequency of use, effectively avoiding water waste, easy to install and use. The automatic sensor flushing kit allows for thorough flushing without leaving unpleasant odors. 2Toilet Lid Sensor: When you close the toilet lid after using the toilet, the transmitter sends out a signal and the receiver receives the signal and flushes automatically. 3Wireless Sensor: The object enters the transmitter sensing area for more than 7 seconds, and leaves the transmitter automatically after 1 second, and the signal is given to the host computer to flush automatically. 4Human Body Sensor: Smart sensor flusher adopts intelligent wireless sensor transmitter set, get up from the toilet and flush automatically. Adhesive design, easy to install and remove. 5Easy to Use: Made of premium ABS plastic material, wear resistant, long service life and more delicate appearance. The sensor allows the toilet to flush automatically when someone waves their hand over the toilet.