Kerui M536 Temperature Display Doorbell with F52 Push Button, Operating at over 500 Feet with Thermometer Display, 58 Chimes, 4 Volume Levels, 1 Receiver & 1 Push Button

Kerui Doorbell - Life happens at the front door

M536 Thermometer Display Doorbell

Features

Digital thermometer display

Alarm for set temperature

500-feet range

58 chimes optional

4 volume levels adjustable

Memory function

Fixed-tone buttons available

Double modes power supply

Technical Parameters

Working voltage: USB 5V or 3*AAA batteries 

Static current: <300uA

Working current: <100mA

Distance range: 500 feet

Size: 138*100*88mm

F52 Push Button

Features

Waterproof button

One Button transmitter 

Long battery life

Long transmitting distance

Technical Parameters

Operating voltage: DC12V

Standby current: ≤5uA

Transmitting current: ≤15mA

Distance range: 650 feet (in the open area)

Battery life: 1 to 2 years

Wireless frequency: 433MHz

Size: 50*50*21mm