Wireless Digital Door Phone System 

A 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. Its also possible to connect the outdoor unit to an electronic door lock, utilising the door release button on the indoor unit.
Details

Simple wire-free installation and setup (Power supplies are wired).
Up to 300m transmission range
8 Ringtones and 3 adjustable volume levels
A weatherproof outdoor unit can be connected to an electronic lock (not supplied)
Supplied with 2 power supplies, mounting brackets and fixing kits

Specifications

Frequency 433 MHz
Transmission distance Up to 300m (open area)
IP rating IP44 (outdoor unit only)
Power supply : indoor unit DC5V/0.5A USB TYPE-C
Power supply : outdoor unit Input: AC100-240V 50/60Hz Output: DC12V 1A
Dimensions (indoor unit) 210 x 68 x 58mm
Dimensions (outdoor unit) 158 x 62 x 51mm (including shade)
Weight (indoor unit) 240g
Weight (outdoor unit) 172g (including shade)
Standby Current