Feature: 1. Automatic 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. 2. Toilet 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. 3. Wireless 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. 4. Human 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. 5. Easy 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. Specification: ​Item Type: Automatic Touchless Toilet Flusher Material: ABS Flusher Charging Method: USB Flusher Infrared Sensing Time: 0.25S Flusher Maximum Sensing Distance: 15cm/5.9in Press Weight: 5kg/11.0lb Sensor Size: Approx. 6.5x1.5cm / 2.6x0.6in Gross Weight: 338g/11.9oz Sensing Away From The Sitting: Sensing More Than 7 Seconds Before The Machine Works (can Be Fixed On The Toilet Tank, Or Toilet Lid) Flusher Battery: 1800mAh Lithium Battery (included) Sensor Battery: 2 x AAA Batteries (not Included). Package List: 1 x Flusher1 x Sensor5 x Push Head1 x USB Cable1 x Sensor Adhesive1 x Flusher Adhesive Note: All data are measured manually, and there are certain errors in the measurement results.