from reputable manufacturers...
ADT Manual Call Points Fire Detector
* Semi flush or surface mounted
* Range includes different colours and text for bomb alert, gas discharge, exit doors etc.
* Evacuate or alert modes available
* Some models include an LED
MX Virtual detection
With ADT's MX Virtual detection, programming allows over 20 different detection modes to be achieved from only 4 physical detectors. This includes the unique, fully approved carbon monoxide fire detector. Nonetheless, modes can be switched automatically from day to night to satisfy the changing requirements of the area being protected.
It also includes multi sensor technology which combines a relationship between a heat element and smoke channels in one device for greater fire coverage.
ADT Sounders Fire Detection
The sounders from ADT have a low current. They includes beacons and visual aids for hearing impaired people or noisy areas. The full sound range ensures compatibility with existing tones for extensions to installed systems