The X-Sense SD21 Smoke Alarm offers reliable fire protection with its 10-year battery life, powered by a sealed lithium battery that requires no replacement during its lifespan. This standalone unit features an auto-check function, continuously monitoring its performance and alerting you with an 85 dB alarm and flashing red LED if any faults or battery issues arise.

With the latest sensor technology, it quickly detects hazardous smoke while minimizing false alarms. Installation is quick and easy, with screws, anchor plugs, and mounting brackets included for secure mounting. The durable, fire-retardant ABS plastic housing ensures long-lasting performance, making this alarm a trusted safety solution for your home.

• It is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station
• Constantly monitors itself and quickly warns you of faults or a weak battery; clearly informs you of the working status of the alarm with its 85 dB alarm and flashing red LED indicator
• Using the latest sensor technology, this smoke detector responds more quickly to hazardous smoke than traditional smoke detectors, while at the same time minimizing false alarms, e.g. from cigarette smoke

Product Dimensions:

10.50 x 5.10 x 5.50 in

2.50 lbs

Shipping Dimensions:

11.00 x 5.50 x 6.00 in