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Product Details
Hot sale acdc smoke detectors smoke heat alarm with 9v battery 220v ac sensor alarm
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SR-820D Series Photoelectric Smoke & Heat Alarm
SR-820DHS Independent Photoelectric smoke & heat alarm
SR-820DHM-AC Wireless interconnected photoelectric smoke &heat alarm
SR-820DHR Wireless photoelectric smoke &heat alarm
SR-820DHW-AC Wireless interconnection photoelectric smoke &heat alarm
Main Features:
Battery operated or AC power with backup battery
Photoelectric sensing technology
Lower battery indication
Loud 85dB audio alarm
Instant test button
MCU processing
Test and hush button
Interconnection function
57℃(135℉)fixed temperature alarm
Execute criterion: EN54-4,UL539,EN14606; UL217
Technical specification:
Model No. | SR-820DHS | SR-820DHM-AC | SR-820DHR | SR-820DHW-AC |
Operating voltage | 9V battery | AC110/220V(9V backup battery) | 9V battery | AC110/220V(9V backup battery) |
Interconnection | N/A | Up to 40 pc smoke detectors | N/A | Install within the radius of 200 m |
Code form | N/A | N/A | 2262/1527 | 2262 |
Sending frequency | N/A | N/A | 433MHz | 433MHz |
Radio distance | N/A | N/A | 200 m(open area) | 200 m(open area) |
Alarm temperature | 57℃ | |||
Sensitivity | 2.06%ft±1.3%ft | |||
Sound level | 85dB/3m | |||
Installation | Wall or Ceiling mounted | |||
Working environment | -10℃~+50℃(≤95%RH No congelation) | |||
Dimension | 128*38mm | |||
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!
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