... design,high stability 4.infrared photoelectronic sensor fire alarm system smoke detector 1.TECHNICAL SPECIFICATION•OPERATING VOLTAGE: DC ... meter(with the installation height less than 6m)•ALARM OUTPUT: Relay output N.C., DC28V,100mA•DIMENSION SIZE : 104mm ... SENSOR•AUTO RESET•INTELLIGENT LOGIC CONTROL•NETWORK OUTPUT/LEDINDICATING ALARM•ANTI-LIGHT,MOTHPROOF,DUSTPROOF•STRONG ADAPTABILITY FOR ...