Smoke detector, combined smoke and carbon monoxide detector, composite alarm with audible warning and battery-powered digital display

This 2-in-1 smoke and carbon monoxide detector uses high-precision electrochemical sensors, providing reliable detection of both carbon monoxide and smoke. Ideal for indoor use in locations such as homes, factories, shopping centers, and offices.

Technical Specifications: High-precision electrochemical sensor for CO; Infrared photoelectric sensor for smoke detection; Audible alarm ≥ 85 dB; Operates on 3 AA 1.5V batteries (not included). Compatibility and Accessories: Suitable for installation in various indoor environments. Includes: mounting bracket and screws for installation. Installation: To install, drill two holes where marked, insert the plastic eyelets, and then attach the bracket to the ceiling using the screws provided. Operation: After installation, press the 'test' button to verify operation. The detector will sound an alarm if smoke or carbon monoxide is detected.