Mercury: 350.003UK, Wireless Digital Door Phone System, 300m Range, 433 MHz, Weatherproof Outdoor Unit, 8 Ringtones Default:- with an event capacity of

with an event capacity of 150

this boom includes adaptors for both 3/8" and 5/8" microphone clip attachments

Energy Efficiency:

designed for both commercial and residential applications

Ideal for use in larger homes and business premises or as an assistance button for the elderly

Mercury: 350.003UK, Wireless Digital Door Phone System, 300m Range, 433 MHz, Weatherproof Outdoor Unit, 8 Ringtones Default:- with an event capacity ofA stylish wireless digital door phone that allows you to talk to your visitors before opening the door. No wires are required between the outdoor and indoor units, making this system very simple to install. It's also possible to connect the outdoor unit to an electronic door lock, utilising the door release button on the indoor unit. Simple wire free installation and setup Up to 300m transmission range 8 Ringtones and 3 adjustable volume levels