Honeywell Series 3 Wireless Plug-In Doorbell with volume control and push button. It is simple, reliable and hassle-free, this plug-in doorbell will never need new batteries and comes with adjustable volume to suit your mood, as well as a LED strobe for added visual alerts. It has Honeywell Home ActivLink technology providing a reliable wireless connection, you know the doorbell will always work. We can easily adjust the volume to suit family and mood or when you simply want some quiet time. It benefits from digitally enhanced, crystal clear sound that carries well throughout the home and garden, packing market-leading sound quality into some deceptively small packages. It comes pre-linked and ready to install straight out of the box with optional screw-free installation and an easy open battery compartment so you can be set up in minutes. All this is backed up by our 2 years product guarantee. The pack contains 1x wireless plug-in doorbell, 1x wireless push button, 1x CR2032 (3V) battery, 1x quick start guide, 1x safety and guarantee, 1x declaration of conformity.