PRODUCTS
SR-821THS 2 in 1 Detector Wholesale Combo smoke and carbon monoxide detector alarm
Battery Smoke and CO Alarm SR-821THS combines smoke and carbon monoxide detection with MCU processing, 85dB sound & flash alert, test/hush button, auto reset, and low battery warning.
Battery Smoke and CO Alarm SR-821THS is a reliable battery-powered safety device designed to detect smoke and carbon monoxide in homes, apartments, hotels, vehicles, and commercial projects. With MCU processing, low power consumption, sound and flash alarm, test/hush button, and low battery warning, it provides stable protection for long-term safety applications.
Main features:
- MCU processing
- Low power consumption design,battery used for over 3 years
- On-top battery compartment,easy battery replacement
- Tamper resistant pins for battery
- Low battery warning
- Shockproof design,suitable for vehicle use
- Auto check malfunction in smoke chamber
- Test and hush button
- Auto reset
- Low battery warning
Technical specification:
| Model No. | SR-821THS |
| Operating voltage |
DC3V(2×1.5V AA alkaline batteries) |
| Static current |
≤10uA |
| Alarm current |
≤25mA |
| Alarm output |
Sound &Flash alarm |
| Sensitivity |
0.16dB/m(±0.05dB/m)/150PPM±50PPM |
| Sound level |
85dB/3m |
| Installation |
Wall or Ceiling mounted |
| Working environment |
-10℃~+50℃(≤95%RH No congelation) |
| Dimension |
110*45mm |
FAQ:
1: What type of projects is the SR-821THS suitable for?
A: The SR-821THS is suitable for residential buildings, apartments, hotels, dormitories, offices, and vehicle-related safety applications.
2: What power supply does this smoke and CO alarm use?
A: It operates on DC3V power with 2×1.5V AA alkaline batteries, offering low power consumption and long service life.
3: Does the SR-821THS support easy maintenance?
A: Yes. It features an on-top battery compartment, test/hush button, low battery warning, and auto-check function for smoke chamber malfunction.
4: Can this alarm be installed on both walls and ceilings?
A: Yes. The SR-821THS supports wall-mounted and ceiling-mounted installation, making it flexible for different project layouts.
5: Is OEM/ODM customization available for bulk orders?
A: Yes. For distributors, wholesalers, and engineering contractors, OEM/ODM customization can be supported based on order quantity and project requirements.