吸烟和温度探测器和UL，以及这approva

SD119-4H is a 4 wire multipurpose heat andphoto smokedetectorwith UL268/521 and EN54-5/7, CEapprovals Features: 1) Models:SD119-4H(12V) or SD119-4H(24V) or SD119-4H(48V) 2) Advanced detection and discrimination algorithms 3) Easy installation and maintenance 4) Polished low-profile housing design 5) Durable sensor head, no need for replacement 6) SMD circuit board design: satisfactory quality and reliability guaranteed 7) N/C (normal / close) and N/O (normal / open) relay output ways for option 8) AR (auto reset) function for security systems available 9) Sensor base: standard and Schottky diode style for optional 10) Five-year warranty Smoke Sensitivity: per UL268or EN54-7standard Ceiling Spacing: 50 foot rating for heat sensor (55 degree) Reset Voltage: less than 1 volt Reset Time: less than 1 second Alarm Indicator: LED continuously emitting red light Remote Output: 25 mA max., diode gate Temperature Range: -10°C to 50°C Permissible Current: 80mA maximum Humidity: 0 to 95% RH, no condensation or icing Alarm Contact: NO or NC Operation, Form A: 1.0A@30VDC/0.5A@125VAC Dimensions: 100mm (dia) x 52mm (ht) with base Weight: 130g/set with base