This is the manual of the product:
Passive SLIM speaker unit
Additional speaker unit to be connected to an active speaker unit, to a 2-wire speaker unit or to an Esse-ti autodialer with specific output for additional microphone and loudspeaker.
The passive SLIM speaker unit is designed for installation behind the COP.
The speaker units allow two-way communication with excellent audio quality and low consumptions.
Equipped with advanced self-diagnosis system to detect cabling errors or damages, they guarantee the utmost reliability.
Quick and easy to install, offer the possibility of combining active and passive handsfree terminals to save on installation costs.
The telephone-technology speaker units offer a comprehensive choice in terms of casing. The wide range of size and fittings combines functionality and versatility in order to meet any installation requirement.