2 wire & 4 wire optional;
Heat detector:
Heat detector SR-502 Series
SR-502-2 2-Wire network heat detector
SR-502-4 4-Wire network heat detector
Main Features:
Combination rate-of-rise and fixed temperature alarm
MCU processing, eliminate false alarm
Low standby current
Anti-RFI &Anti-EMI
9-35VDC wide operating voltage range
LED flashing visible in 360 degrees direction
Power supply non-polar input
Remote LED indicator output (2 wire)
Rustproof, mothproof, anti-light interference design
Execute criterion: GB4716, EN54-5
Model No. | SR-502-2 | SR-502-4 |
| Operating voltage | DC 9V-35V | |
| Static current | ≤50uA | 12mA(NC);2 mA (NO) |
| Alarm current | 35mA(12V); 83 mA (24V) | 5mA(NC); 15 mA (NO) |
| Alarm output | Remote LED indicator | Relay output |
| Alarm temperature | Rate-of-rise alarm: temperature rising rate>8℃ | Fixed temperature alarms: 57℃(135℉) |
| Installation | Ceiling mounted | |
| Working environment | -10℃～+50℃, Humidity ≤95%RH | -10℃～+70℃ |
| Dimension | Ф100*48mm | |
SR-502 Heat detector
2 wire & 4 wire optional;