• Working together with the doorbell button. Just press the button and the doorbell will receive a signal, you immediately know that someone is coming
• Operating range up to 100m in an open area when there are no obstructions
• Higher penetration without worrying about signal obstruction ensures you will never miss a visitor, even if you are a few rooms away or on another floor
• Easy to Install. Just plug the receiver into a socket, and mount the doorbell transmitter on the wall or anywhere you want, the effortless installation
• Features 38 melodies and 4 level adjustable volume. It meets your different needs. Setting different ringtones for different receivers can let you know which door the visitor is at
• Dustproof and waterproof, suitable for any home, townhouse, apartment, office, school, hospital, hotel, etc

Specification:

• Button:
• Power supply: Self powered 
• Weight: 35g
• Distance of transmission: 100m (no barrier)
• Working frequency: 433MHz
• Appearance size: 70mmx45mm
• Working temperature: -20℃～+60℃
• Doorbell Receiver:
• Power supply: AC 110V~230V, 50/60Hz
• Music: 38 Melodies
• Weight: 50-55g
• Distance of transmission: 100m (no barrier)
• Working frequency: 433MHz
• Appearance size: 67mmx50mm
• Working temperature: -10℃～+45℃