Pre-linked: ready to go out of the box• 4 melodies• Wireless range: up to 150m (868MHz), audible range: 60m (80dB)• Includes: 1 x CR2032 (3V) battery with up to 2 years life• Requires: 4 x LR6 (AA) 1.5V• Dimensions (HxWxD) - 110 x 70 x 42.5 (doorbell), 30 x 70 x 16 (push button)Honeywell ActivLink™ interconnects your doorbell with Honeywell security accessories and Home Alarm Kits to build your own bespoke home alert and alarm system. Secret Knock function plays a different melody, so you know if it's a family member or friend at the door.

Brand Name	Honeywell
Colour	White
Manufacturer Model No	DC311N
Type	Door Chime
Mains or Battery	Battery
Warranty (years)	2 years
Depth (mm)	42.5mm
Width (mm)	70mm
Sound volume	80dB
Pack contents	1 x wireless doorbell, 1 x bell push button, 1 x CR2032 (3V) battery, fixings
Fixings Supplied	Yes
Power source	Battery
Number of melodies	4