Main Features:

1.SR-505-4 is 4-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.Alarm output is Relay output

10.Rustproof, mothproof, anti-light interference design

11.Execute criterion: GB4716, EN54-5

Technical specification: