Carbon Monoxide Detectors, Carbon Monoxide Detector Plug in with Temperature Humidity Sensor Built-in, CO Level Monitor Alarm with Clear LCD Display Sound & Light Warning for Home/Hotel/RV Concrete Mixers please for 5 minutes before

please for 5 minutes before using it for the first time

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Carbon Monoxide Detectors, Carbon Monoxide Detector Plug in with Temperature Humidity Sensor Built-in, CO Level Monitor Alarm with Clear LCD Display Sound & Light Warning for Home/Hotel/RV Concrete Mixers please for 5 minutes beforeAbout this item New Upgrades This Carbon Monoxide detector Equipped with 3 major air indicators of Carbon Monoxide(0 to 999PPM), Temperature(1 to 176 ), and Humidity(0% to 95%RH) to protect your family. Easy to Use Plug and play, saving installation time. Accuracy & Durability This Carbon Monoxide Alarm use Imported Electrochemical Sensor, high reliability, more responsive, when the CO gas concentration reaches the alarm level(>150ppm), the Voice and