* Complies with BS EN81-1 & 2

* Up to 12 lifts can be connected to one Security Room handset

*Adjustable volume controls

* Only 1 pair in the trailing cable

* Only 1 pair between the Security Room and the Machine Room

* Power Supply with 1,2 Ah battery back-up

* These products are the same as we use in our successful fire-fighting and evacuation intercom systems