TSA-a/b

Adapter for connecting 4-wire or FTZ door phones to an analogue port of modern ICT systems

Access of older door phone systems with up to 2 bell buttons to an analogue port of a modern ICT system

Inverter from 4-wire and FTZ 123 D 12-0 interface to analogue subscriber ports

Additional switching options via optional a/b Switching Modules

Power supply via bell transformer

Separate volume control for both speech channels, impedance adjustable

Your advantages in detail

The conversion of telephony to IP often involves purchasing a new ICT system. Although these modern systems are state-of-the-art and offer all sorts of modern features, you will not find a connection for the existing door phones anywhere. Here's the solution:

With the TSA-a/b door phone adapter, door terminals with an older 4-core interface or a 2-core connection in accordance with FTZ 123 D 12-0, which perhaps cannot be easily replaced for structural reasons, can be connected to the analogue port of a modern, VoIP-enabled ICT system. The existing door terminal, from Siedle, Ritto, Grothe or Auerswald/FONtevo for example, can be kept.

The TSA-a/b is suitable for use on all conventional ICT systems with analogue subscriber ports.

Features & technical data

Everything you need to know about our products comes now. Scroll down for more information.

Connections	Base	Max
Power supply	bell transformer, 8 V – 12 V AC or 12 V – 40 V DC, 0,5 A max.
System connection	analogue subscriber port of an ICT system
Door phone connection	4 wire system or FTZ 123 D 12-0 interface (e.g. Siedle, Ritto, Grothe), power supply 9 V / 12 V DC, 200 mA (can be selected)
Bell button	2 max., dry contact
Door opening relais	8 V – 12 V AC, 12 V – 40 V DC, 2 A
Light relaiy	8 V – 12 V AC, 12 V – 40 V DC, 1 A
Casing material	plastic, grey
Dimensions (w x h x d)	142 mm x 81 mm x 27 mm
Weight	136 g
Compliance	CE