General
Product type	Language module -
Size	3 (large) -
Colour	Silver -
Spacing between speaker/microphone	94 mm
Accessories required	patch cable 20-9301 -
Mounting method	Rear mounting -
Compatibility	Door intercom stations Series 20, BNOS elevator emergency telephone -
ear category (ElektroG)	Category 5: Small appliances power supply -
Mains supply	Yes -
Application range	Elevators, intercom stations -
Connection option	Emergency call button -
Wiring	patch cable required -
Mounting plate	large -
Speaker	large -
Connection board	pre-assembled -
Manufacturer	Telecom Behnke -
Use in elevators	Yes -
Integration into door intercoms	Yes -
Patch cable order no.	20-9301 -
Pre-assembly	Connection board pre-mounted -

The Speech Module 3 (large) from Telecom Behnke is a rear-mounted module for the Series 20, specifically designed for integration into door intercom stations or for sound reinforcement in elevator cabins. It serves as a speaker and microphone module and is mounted on a large mounting plate, with the connection board already pre-installed. The module is silver in colour, providing a neutral and professional appearance.

Applications
This module is primarily intended for use in elevator cabins, where it functions as part of an emergency call system. It can be connected to an existing emergency call button to enable communication between the cabin and the operations centre or a maintenance station. Installation is carried out behind the front panel, allowing seamless integration into existing installations without requiring additional drilling or modifications to the cabin. The module can also be used in other areas where voice communication via a Series 20 door intercom station is required.

Functions and Equipment in Detail
The module features a large speaker and a microphone mounted on a mounting plate. The connection board is already integrated, simplifying installation. The spacing between the speaker and microphone is 94 mm, which must be considered during installation planning. The module dimensions are 150 mm (height) × 72 mm (width) × 30 mm (depth) without cover, and 150 mm × 72 mm × 32 mm with cover.

Technology Explained Simply
The module is a passive component connected to the network via a patch cable. Its function is based on transmitting voice signals between the microphone and speaker, with the connection board establishing the electrical connections. Installation is performed behind the front panel, making the module invisible and preserving the aesthetic appearance of the cabin or door intercom station.

Compatibility and Accessories
The module is compatible with Series 20 door intercom stations from Telecom Behnke. When installed in an elevator cabin, it requires that a BNOS elevator emergency call telephone from Telecom Behnke is already installed. The connection board is pre-mounted, so no additional electrical work is required.

Installation and Mounting
Mounting is performed behind the front panel, with the pre-installed connection board enabling electrical connections. The 94 mm spacing between speaker and microphone must be considered during installation planning. Installation does not require special tools, but the correct patch cable (order no. 20-9301) must be used to ensure proper functionality.

Operational Advantages
The module provides reliable voice communication in elevator cabins and door intercom stations. The pre-installed connection board reduces installation time and minimises errors. The silver colour blends well with most technical environments. Integration into existing Series 20 systems is straightforward, as the module can be directly connected to the existing infrastructure. The emergency call button can be directly connected to the module, enhancing functionality and ensuring emergency communication.