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2018 hot selling fixed temperature alarm heat detector with CE
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Heat detector SR-502, SR-503 Series
SR-502-2/SR-503-2 2-Wire network heat detector
SR-502-4/SR-503-4 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 |
Technical specification:
Model No. | SR-502-2/SR-503-2 | SR-502-4/SR-503-4 |
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 | 100*48mm | |
Product Pictures:
| Delivery Time | |
| Sample order | 1-3 working days |
| Bulk order | 25-35 working days |
| Stock order | 7-10 working days |
Q1:Are you manufacture or trading company?
A1:We are a professional manufacture specialize in fire alarm products.
Q2:What is the moq?
A2:As usual,there is ready stock for our regular & hot selling models.
So any order quantity is welcome.
Q3:Can I customize LOGO and customized functions?
A3:Yes you can. Packaging, products, instructions can be printed logo. and functions we have professional R&D team to support best service.
Q4:How about the quality of your products?
A4:Our raw materials are purchased from qualified suppliers.
Q5:How long is the warranty time of the products?
A5:The warranty period is 2 years from the factory,if there are individual quality problems,
we will replenish the customer in the next batch of orders.