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Hot sale Sumring 2 wire Heat detector support rate of rise temperature alarm
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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:
Shenzhen SUMRING Technology Co. Ltd is a Hi-tech enterprise specialized in the research & development of security and fire alarm products, including PIR detector, smoke detector, gas leakage detector, Carbon Monoxide detector, fire alarm bell/strobe siren, manual call point, magnetic contact ,BT Module etc. Enter more
1:Can I get one sample for test before big order ?
Sure, you can.Please leave a message we will contact you soon.
2. Can I customized LOGO?
Yes you can. Packaging, products, instructions can be printed logo.
3. Can I customized functions?
Yes you can, we have professional R&D team to support best service, and give you best suggestions.
4. How about the quality of your products?
Our raw materials are purchased from qualified suppliers. And we have a strong quality control team to guarantee our products quality.
5. How long is your products quality warranty?
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
6. When can you ship out my order after my payment?
Normally samples order: about 5-7 days; mass order 2-3 weeks.
7. Can I visit your factory and company office?
Sure, welcome ,any time!
Packaging information
Shipping information
* Express(UPS, DHL, Fedex, EMS, etc) is available.
* Sea and Air delivery is available
* welcome your agent to deal with our products .