General
Housing material	Aluminium
Design	V2A design
Transmission range	0 to 10 m
Beam angle horizontal	min. 70 °
Beam angle vertical	min. 45 °
Relay	1 configurable
Relay type	Normally closed contact (NC) or normally open contact (NO)
Relay version	Dry contact
Size	2

The motion sensor with integrated speaker from Telecom Behnke is a module for installation in intercom systems and serves for detecting motion within a defined area. The device is designed in size 2 and features a robust aluminium housing construction in V2A design, ensuring high mechanical stability and resistance to external influences. It is intended for use in low-voltage installations, particularly in systems combining acoustic signalling and motion detection.

Motion sensor
The sensor detects motion within a configurable range of 0 to 10 metres. The range can be adjusted according to requirements, enabling flexible adaptation to different rooms or application scenarios. The field of view is at least 70° horizontally and at least 45° vertically, with exact values depending on the set range. This allows sufficient coverage of areas without unnecessarily monitoring large zones.

Speaker function
An integrated speaker is provided for acoustic signal transmission in intercom systems. The combination of motion detection and speaker enables automated communication, for example upon arrival of a visitor, allowing presence to be detected and an acoustic message to be triggered. The function is suitable for use in single- and multi-family homes as well as in commercial installations.

Technology explained simply
The module operates using a passive infrared (PIR) sensor, which detects temperature changes in the environment to recognise motion. The integrated electronics allow configuration of the range and field of view. The device features a configurable relay, which can be operated as either a normally open or normally closed contact and is potential-free. This relay can be used to control external devices, such as light switches or alarm systems. The potential-free design means the relay does not carry its own voltage, but only opens or closes a contact, enabling flexible integration into existing circuits.

Compatibility and accessories
The module is designed for use in intercom systems and can be integrated into existing systems. No specific accessories or additional components are required to use the basic functions. Compatibility with other components of the intercom system depends on the respective system architecture, although the technical specifications of the module enable standard integration.

Mounting and installation
Mounting is carried out at a suitable location in the room, with attention paid to aligning the sensor towards the area to be monitored. Installation requires connection to the intercom system and power supply, which is provided via the respective system. Specific mounting instructions can be found in the technical data sheet of the intercom system, as the module is integrated as a component into a larger system.

Advantages in operation
The combination of motion detection and speaker enables automated and responsive communication. The configurable range and field of view ensure application-specific adaptation, avoiding unnecessary triggers. The potential-free relay offers flexibility in controlling external devices without requiring additional power sources or adapters. The robust aluminium construction in V2A design ensures long service life and resistance to mechanical stress.