Conventional Heat Detector,Two or four-wire models,Advanced detection and discrimination algorithm,Easy installation,maintenance
.  Product features                                                
o  Two or four-wire models
o  Advanced detection and discrimination algorithms
o  Easy installation and maintenance
o  Sleek low-profile housing design
o  Durable sensor head, no need for replacement
o  SMD circuit board design-satisfactory quality and reliability guaranteed
o  Five years limited warranty
o  Satisfactory quality and reliability guaranteed
.  Options:                                                                                  
o  AR (auto reset) function for security systems (optional for four-wire models)
.  Heat sensitivity:
o  Ceiling spacing: 50-feet rating for heat sensor
o  Start-up current: 70mA maximum
o  Alarm impedance: 100 ohms +3V maximum, 560 ohms +3V maximum (red LED open circuit)
o  Reset voltage: less than 1V  Reset time: less than one second
o  Alarm indicator: continuously emitting red light Temperature range: -10 to 50 degree Celsius  
o  Remote output: 15mA maximum, diode gate
o  Permissible current: 15mA maximum, diode gate, 80mA maximum
o  Humidity: 0 to 95%RH, non condensation or icing
o  Alarm contact: for four-wire NO or NC operation  N/C (normal/close)-N/O (normal/open) selectable relay output
o  Form A: 1.0A at 30V DC/0.5A at 125V AC
o  Dimensions: 10 x 46mm with base Weight: 160g/set with base Dimensions (diameter x H): 100 x 46mm, with base Weight: 130g/set, with base