Stand-alone smoke alarms THC-98C Features The ionization room adopts single-power twin-room structure in the world, has high sensitivity and good anti-jamming Performance. Adopts special control CMOS chip gathering high compositive degree, steady performance and long using life. Tiny power consumption, battery as power source, safety, convenient Installation, not join other power source. Alarm function of low voltage, reminding you to replace the battery on time. Periodic testing: We suggest that you would better do a simulation testing every week or every 15 days to guarantee your damage declining to the lowest when danger happen, you only press the testing button gently for this work. Convenient installation: Do not effect by the position of power, spare the trouble of drawing power source, please refer to installation way and note For the installation. Double alarm: Adopts double alarm of sound-audio, it can attend the common or lower auditon user at the same time. Technical data Operating voltage 220 to 250V AC Frequency 50 to 60Hz Rating current 10A Setting range brightness 2 to 2000 Lux Switch-on delay 60 S Switch-off delay 60 S Incandescent lamp load 2300W Installation type wall mounting Housing material Thermoplastic, fire resistant IP Rating IP20 Ambient temperature -20 centigrade to 55 centigrade