CACAZI portable buzzer with a communication range of up to 100 meters. A set of buzzer and bell, ready to use. 【No Construction Required, Easy Operation】This call bell (nurse call, care bell) can be installed without any construction, so even those who are not good with machines can use it immediately. Simply plug the receiver into an outlet and press the SOS button on the transmitter, and the receiver will sound. Volume adjustment and melody selection are also easy. No instruction manual included. Shipped in simple packaging. - Brand: CACAZI - Size: 65mm x 95mm (transmitter), 34mm x 60mm (remote control) - Communication Distance: Up to 100 meters - Waterproof Standard: IP44 Used item, but hardly used. Please understand that this is a used item. Thank you for viewing.