Automatic toilet sensor flusher water tank accessories flush valve infrared toilet toilet toilet smartready stock/ Product includes 1 transmitter and induction receiver The transmitter can be attached anywhere about 3 feet away from the sensor The transmitter can sense the human body within 50cm,Guests in need can add a transmitter to useSuitable for most toilets, dogs and cats can also use itThe body is connected to the toilet with double-sided tape, it is recommended to wait for 24 hours to stabilize before using