Nrs Healthcare Wireless Video Door Phone This Wireless Video Door Phone is an excellent security aid that allows the person at home to see who is calling around.Comprising of a camera and monitor unit, the Wireless Video Door Phone alerts you when someone wants to come in and allows clear video and audio two way communication between the two parties. The water resistant Video Door Phone will take pictures of the previous 20 visitors so you know who has called and boasts an impressive wireless operation range of up to 450ft (137m) in an open area. The camera unit can be fixed into the optimum position with the supplied mounting bracket and the monitor unit is fully portable but has a charging dock for when it is low on power. Furthermore, the Wireless Video Door Phone has an integrated night vision mode so you can even see your visitors at night.Specifications: Camera operates on 4 x AA batteries (not included)Camera unit length: 108mm (4.25'')Camera unit width: 75mm (3'')Camera unit de