The main characteristsis of this telephone "extra features" handset, for "2Plus" 2 wire audio installations are:
- ABS plastic housing in RAL9002 white colour.
- detachable telephone cord with connectors
- Privacy on audio and door open progress.
- Input for door bell apartment push saving the use of a seperate door bell.
- Maximum number of units in the same apartment is three.
- 2 position call volume regulator
- Additional push button can be used as potential free contact or to activate a SAR-2Plus digital relay unit.
Dimensions: 220mm x 86mm x 56mm.