Campanello per Porta, Campanello Sensore per Porta Wireless Quando La Porta Si Apre,Allarme Ingresso Porta C
3 Direction for use. 2 Door Alarm for Kids Safet. The light stays on just while the unit is chiming. 1 1 Receiver+2 Sensor. 2 2 Receiver+1 Sensor. 3 3 Receiver+3 Sensor. 4 1 Receiver+4 Sensor. The video showcases the product in use.