AC-Plug-in Carbon Monoxide Detector with Temperature Humidity 1. Professional Carbon Monoxide, Temperature and Humidity Sensor 2. High-grade ABS material 3. Optimized structural design 4. Fast response CO level 5. Voice and light warning This product is newly optimized for easier installation and faster response to threatening gases, making your home safer. Easy to Install Can be plugged directly into the power outlet, Plug and play, easy installation Fast Heat Dissipation Design Even if the power supply is used all the time, it will not get hot, giving customers more peace of mind. Professional Temperature and Humidity Sensor High Accuracy, Fast Access to Temperature Humidity Information. Allows You to See at a Glance, Clear The Condition of The Surrounding Environment. 3 in 1 Detectors - Our Carbon Monoxide Detectors plug in can not only Monitor Carbon Monoxide, but also Monitor the Temperature and Humidity of the Surrounding Environment, so that You Know Clear the Condition of the Surrounding Environment. Professional CO Gas Sensor - Using Highly Sensitive Electrochemical Sensors, 0-1000PPM, Quick Response, Fast Alarm. ? Voice Light Alarm - When the Gas Concentration Exceeds the Standard, the Intelligent CO Detector can Quickly Recognize and Issue an Alarm of 85dB or Above, Allowing you to Detect and Make the Right Choice in a Timely Manner. Easy to Install - Plug in Carbon Monoxide Detector, Plug and Play, Saving Installation Time. Widely Used - 3 in 1 Travel Carbon Monoxide Detector are Suitable for Bedroom, Kitchen, Living Room, Bathroom, Apartment, Garage, Office, Restaurant, Hotel, etc. Worry-Free After Service - We are willing to provide you with unconditional returns and exchanges within 90 days. If you have any questions, please contact us by email, we will try our best to help you solve the problem.