Smoke & co detectorHeat detector ntc thermal sensor tamper resistant pins for battery4 digits temperature led display shockproof design, suitable for vehicle usecan set maximum or minimum alarm temperature simultaneously test and hush button, auto resetreal ambient temperature correctable on-top battery compartment, easy for battery replacementauto reset /power off reset optional Execute criterion: en54-4, ul539, en14604, ul217 dustproof, mothproof and anti-white light ElectrovalveManipulator gas species: natural gas, lpg, man-made coal gas and other noncorrosive gaspower supply: 8vdc-16vdc 12vdc-26vdc valve body material: brass alloyoperation press: 1.6mpa material for sealing: nbr rubbervalve specification: 4 fen (1fen=1/3centimeter), 6fen, 1 inch, 1.25 inch, 1.5 inch test operating pressure: 25kpa torque: 10kg.Cm~30kg.Cm~40kg.Cm~50kg.Cm11069.540mm Anti-electromagnetic interference, no-spark design Alarm bellBreak glass manual call point size: 2", 3", 4", 6", 8", 9", 10", 12"rated voltage :12vdc or 24vdc / 220vac optional volume: over 105db/mconsumption: 10w working voltage : 12vdc/24vdc With waterproof cover manual call pointSiren with strobe