Plug in the power supply, after 60 seconds of preheating, a green light is displayed to indicate normal operation.
When the device encounters a power outage, the 9V battery backup function plays a very big role in continuing to supply power to the device so that it can continue to operate.
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Model | KH522 |
Power supply | Plug-in |
Battery backup | 9v |
Alarm Current | <120 (mA) |
Operating Temperature | -20°C - 50°C (°C) |
Moisture Determination Range | 15%-90% RH |
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carbon monoxide detector | 2 Packs carbon monoxide detector | natural gas detector | 2 Packs natural gas detector | gas and carbon monoxide detector | |
Customer Reviews |
4.6 out of 5 stars
923
|
4.6 out of 5 stars
923
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4.4 out of 5 stars
433
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4.4 out of 5 stars
433
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4.0 out of 5 stars
1,092
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Price | $26.99$26.99 | $46.99$46.99 | $20.99$20.99 | $41.99$41.99 | $29.99$29.99 |
carbon monoxide detector | ✓ | ✓ | |||
gas detector & alarm | ✓ | ✓ | |||
gas and carbon monoxide detector | ✓ | ||||
Plug in | ✓ | ✓ | ✓ | ✓ | ✓ |