General description This Combination Smoke and Carbon Monoxide Detector is a composite alarm designed for indoor use in various settings such as villas, factories, shopping malls, warehouses, and office buildings. It features a digital display and an audible warning system, ensuring high safety standards with its advanced detection capabilities. Technical specifications Type: 2-in-1 smoke and carbon monoxide detector Sensor technology: High-precision electrochemical sensor for carbon monoxide detection Additional sensor: Infrared photoelectric sensor for smoke detection Power supply: Requires 3 x 1.5V AA batteries (not included) Alarm volume: ≥ 85 dB Installation Drill two marked installation holes in the ceiling Use a hammer to tap two plastic grommets into the holes Install the bracket by inserting and tightening the provided screws into the plastic grommets Usage After installing the batteries, the device will emit a DI sound and start working normally within 2 minutes Press the