Smoke and Carbon Monoxide Detector, Combination Smoke Alarm and Carbon Monoxide Detector Battery Powered, CO Detector with Sensitive Sensor, LCD Display and Sound Warning

Amazon.com Price: $67.99 (as of 07/05/2025 00:18 PST- Details)

Installation steps: Insert the plastic anchor into the hole and fix the battery cover to the ceiling/wall with screws. Push the smoke detector down until it merges with the battery cover and you hear a “click” sound, and the installation is complete.
2-in-1 Detection:SHYEEH 2-in-1 smoke detector carbon monoxide detector combo has built-in sensitive photoelectric smoke sensor and electrochemical CO sensor, which can detect smoke and CO, two deadly gases, more accurately and sound the alarm quickly.
Alarm Standard: Shyeeh smoke and carbon monoxide detector has a specific alarm threshold and can monitor within 215-323ft² to protect your home safety. When the carbon monoxide concentration is higher than 50ppm (red LED flashes) or the smoke concentration exceeds 0.1%db/m (blue LED flashes), the alarm will sound an 85 decibel alarm within three minutes.

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