WOLFSHIELD Portable Mini Carbon Monoxide Alarm

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This will reduce it from £30.99 to about £11.99.

• Absolute quality and safety: WOLFSHIELD carbon monoxide monitor has EN 50291-1:2018 certificate,British Standard has accepted this as well, and CE certification. The carbon monoxide meter uses an advanced electrochemical sensor to quickly detect carbon monoxide concentration and has a sealed internal battery that can last up to 10 years under normal conditions.
• High Alarm Sound and Flashing LED Lighting: WOLFSHIELD CO detectors, within 1 minute, at least 85dB within 3 metres, is loud enough to wake you up at any time, and within 4 minutes the alarm reaches 82dB, with a loud enough alarm sound, can be used with confidence. the carbon monoxide detectors sound is accompanied by a flashing red LED light, it's an audible and visual dual alarm.
• Test Function and Slience Function: The Test Button and Mute Button can be operated by the same key. Test Function detects whether the product can be used normally by pressing the test button, and the Mute Function mutes the Carbon Monoxide Alarms when there is a malfunction of the CO alarm detector (mute for 12 hours), when the battery power is insufficient (mute for 12 hours), and when there is an alarm of low concentration of CO (mute for 10 minutes).