1.SR-501 is 2-Wire network heat detector
2.Combination rate-of-rise and fixed temperature alarm
3.MCU processing, eliminate false alarm
4.Low standby current
5.Anti-RFI &Anti-EMI
6.9-35VDC wide operating voltage range
7.LED flashing visible in 360 degrees direction
8.Power supply non-polar input
9.Remote LED indicator output (2 wire)
10.Rustproof, mothproof, anti-light interference design
11.Execute criterion: GB4716, EN54-5

Technical specification:
Model number:    SR-X501
Operating voltage:    DC 9V-35V
Static current:    ≤50uA
Alarm current:    35mA(12V); 83 mA (24V)
Alarm output:    Remote LED indicator
Alarm temperature:    Rate-of-rise alarm: temperature rising rate>8ºC
Installation:    Ceiling mounted
Working environment:    -10ºC~+50ºC, Humidity ≤95%RH
Dimension:    100*48mm