Exchange unit for connecting several door phones BTVX

BTVX is an exchange unit. It is required when up to four door phones are connected to one handset in a Bewatel system. It ensures that only the relevant door is opened, rather than all connected doors.

Interface	5-wire to handset. Connection to four door phones.
Operating temperature	-20 to +35 °C
Operating temperature	12 to 24 VAC/DC
Current consumption	20 mA in standby
Dimensions (WxHxD)	200 x 140 x 60 mm