Wireless Door Window Alarm Sensor with 2 Receivers - Adjustable Volume Chime for Home, Office & Store Security - Perfect for Entry Alerts, Baby Safety & Business Monitoring

- Material: ABS plastic- Transmitter Voltage: 12V 23A battery operated(not included)- Voltage: 110/240V- Working Distance: up to 300m(in the air)- Transmitter Size: approx. 72x46x21mm/2.83x1.81x0.82inch- Receiver Size: Approx. 92x62x32mm/3.62x2.44x1.26inchPress the button, super learning code can freely learn to match, can be unlimited matching receiver and button.The transmitter without screw chuck design to achieve waterproof and dustproof.

Build in anti-interference design, avoid the interference between the laucher and the receiver.

Perfect for homes, offices, hospitals, factories, hotels, stores, mall, office, warehouse, plant, villa etc.

Wireless chime doorbell, easy to install, can reach up to around 300m in the air.

Musical doorbell, with 60 melodies and 5 volume leveles.

Each pack contains 1 push button transmitter and 2 UK plug-in receiver.