Smoke detector ms-as-02-4smoke detectorproduct informationthe product is a new type of photoelectric smoke detector, when it detects smoke, it will output signal immediately and trigger connected unit to work, which tell you in advance that fire will occurs and avoid unwanted loss, and take you safety and convenience.Specificationspower supply:dc12vdc33vwork temperature:-10+40static current:17-20a(24v) 17-23a(33v)working humidity: