Wireless Doorbell Welcome Bell Home Chime Door Bell Waterproof 32 Songs Smart Doorbell For Smart Home

Specification: 
Color: White; 
Connection Type: Wireless; 
Power: Electric Supply; 
Use of premises: Home,office,villa,factory,school,hospital; 
Receiving distance: 150M ( open area ); 
Music: 32 songs; 
Add: Learn 30 accessories Doorbell Alarm; 
Volume: 4 levels adjustable; 
Button Battery: 1pcs 12V 23A battery( Not included ); 
 
Technical parameter 
1. Receiver Working voltage: AC 100-220V; 
2. Working current: <100mA; 
3. Wireless frequency: 433MHz; 
4. Working temperature: -10 ° C -50 ° C; 
5. Wireless distance: 150 meters (open space); 
6. Button battery: 1pcs 12V 23A battery(not included); 
 
Package Includes: 
1 * Doorbell; 
1 * Button;