The Vd S-tested, photo optical smoke detector is easy to install & can be networked with up to 30 other devices. The Flamm Ex gas detector can be coupled with the system. With the test button you can check the smoke chamber, the electronics & the battery The light-emitting diode displays the operating status of the smoke detector. A stainless steel mesh also prevents the ingress of insects or dust in the smoke chamber The integrated emergency power supply by 9 V block battery ensures operation even during power failures. ...

These high-quality photoelectric smoke detectors will warn you reliably with a clear audible signal if there is a dangerous level of smoke present. Since each room should have its own detector for optimum protection, we have put 3 detectors into one set at an unbelievable super-bargain price. ...

This smoke detector works on the principle of photo-electronic & warns you reliable protection against life-threatening smoke development. By the 9 V battery supply of suitable smoke alarms also ideal for mobile use in caravans or caravan area. For maximum protection, each room should be monitored separately. ...