Photoelectricdetectordetectsthesmokebyacoupleofinfrareddiodes.Theprincipleofdetectingisgranuleinthesmokecanreflectinfraredlight.Infrareddiodesareplacedinthespecialchamber.Thechambercanshiedexternallight,butdon'teffectthesmokeintoit.
Whilehavenosmoke,thediodecanreceivedveryweakinfraredlight.Whenthesmokeenteringthechamber,diodecanreceivedmoreandmorelight,whenthesmokeattainsthecertaindensity,thedetectorcangiveoutalarmsignal.
Thedetectorissuitableforinhouse,shop,hotel,restaurant,officebuilding,school,bank,library,computerhouseandwarehouseetc.Mode No:SA-124W Dimension:φ103mm*50mm Operating voltage: DC 9V -35V Current: 55uA / 2mA relay N.O. / 12mA relay N.C. Alarm Current: 18mA@DC12V 40mA@DC24V 15mA N.O. 3mA N.C. Alarm indication: Red Led On & Relay output Operating Temperature: -10ºC - +50ºC Humidity range: ≤95%RH(40±2ºC) Protection area: 6m high, 60m² Standard:EN54-7,UL268 Certification: CE (EMC & LVD)