Kerui M521 Wireless Doorbell with F51 Push Button, Operating at over 500 Feet with 57 Chimes, 4 Volume Levels, LED Indicator, Memory Function, 1 Plugin Receiver & 1 Push Button Transmitter

Kerui Doorbell - Life happens at the front door

M521 Wireless doorbell

Features

57 chimes available

4 volume levels adjustable

Memory function

LED indicator light

Fixed-chime buttons available

Technical parameters

Working Voltage: 110-240V/50-60Hz AC

Working Power: 0.5W

Receiving Frequency: 433MHz

Distance Range: 500 feet

Maximum Loudness: 100 dB

Size: 96*68*32mm

F51 Push Button 

Features

Emergency button 

One Button transmitter 

Panic button for elderly 

Technical parameters

Operating voltage: DC12V 

Standby current: ≤ 5uA 

Transmitting current: ≤ 15mA

Battery life of call button: 1 to 2 years

Wireless frequency: 315MHz/433MHz  

Distance range: 500 feet

Size: 72*45*23mm