A smoke detector is a device that detects smoke, typically as an indicator of fire. Commercial, industrial, and mass residential devices issue a signal to a fire alarm system, while household detectors, known as smoke alarms, generally issue a local audible and/or visual alarm from the detector itself.
Smoke detectors are typically housed in a disk-shaped plastic enclosure about 150 millimetres (6 in) in diameter and 25 millimetres thick, but the shape can vary by manufacturer or product line.
Most smoke detectors work either by optical detection (photoelectric) or by physical process (ionization), while others use both detection methods to increase sensitivity to smoke. Sensitive alarms can be used to detect, and thus deter, smoking in areas where it is banned such as toilets and schools. Smoke detectors in large commercial, industrial, and residential buildings are usually powered by a central fire alarm system, which is powered by the building power with a battery backup. However, in many single family detached and smaller multiple family housings, a smoke alarm is often powered only by a single disposable battery.
The RFT12 is externally powered by the remote control unit and works in a stand alone way, unlike conventional smoke detectors which are looped toghether to form a network.
- Conventional smoke detector with somke and temperature sensors
- Provided with mounting base.
- Stand alone functionality.
- Relay output contact 30v 1A
- Testable thru magnetic proximity.
- According to EN 54 part 5/6 & part 5/9.
- Power 12 ÷ 28Vcc.
- Max. Current 25mA.
- Size 53 x 110mm