This CO tester features a low-power consumption electrochemical sensor for fast and accurate carbon monoxide measurement. It offers real-time detection with an intelligent alarm system that promptly alerts you when the carbon monoxide concentration reaches dangerous levels, ensuring safety and peace of mind. The large LCD screen provides clear detection values at a glance and includes a low battery reminder. This device is perfect for identifying gas leaks and is suitable for use in environments with carbon monoxide gases, mists, and residues. Features: Compact and Beautiful The tester has a compact, lightweight design with a stylish appearance, making it easy to install without occupying much space. Fine Workmanship Design Constructed from high-strength ABS material, this tester is durable, drop-resistant, and built to last. Clear-definition LCD Display The large digital LCD screen allows easy viewing of detection values, and it includes a low battery reminder. High-precision Sensor Equipped with an accurate electrochemical sensor, the device guarantees fast response, high precision, and reliable performance with superior interference resistance. Intelligent Detection & Alarm This tester quickly identifies gas leaks. When carbon monoxide levels reach a preset threshold, an immediate high-decibel alarm—both audible and visual—ensures maximum reliability and safety. Multifunctional Design Features include fault self-testing, a faulty warning, and a low battery warning for comprehensive functionality and reliability. Cellphone Tuya APP Control Compatible with the Tuya APP, this device allows remote monitoring via your smartphone, enabling you to check data conveniently whether you’re at home, work, or on vacation. Note that the APP data may vary slightly from real-time detector data due to transmission times. Strong Heat Dissipation Numerous ventilation holes are incorporated to enhance air-machine convection and effective detection while providing superior heat dissipation. Easy to Use & Install Features a large test button for straightforward operation and can be wall-mounted for convenient installation. Wide Applications Ideal for homes, kitchens, cars, restaurants, and any indoor environment where carbon monoxide monitoring is necessary. It effectively locates carbon monoxide sources and residues. Specifications: Name: CO Tester Material: ABS Display: LCD backlight display Battery: 2 * LR6-AA (not included) Sensor Type: Electrochemical sensor Detection Type: Carbon Monoxide Sensor Lifetime: Up to 10 years Sound Level: ≥75 dB at 1 meter (3.28 feet) Alarm Output: Audible and visual indication Operation Temperature: -10℃ to 55℃ Ambient Humidity: 0%-90%RH non-condensing Item Size: 90 * 90 * 33mm / 3.54 * 3.54 * 1.30in Item Weight: 110g / 3.88ounce Package Size: 95 * 95 * 35mm / 3.74 * 3.74 * 1.38in Package Weight: 120g / 4.23ounce Packing List: 1 * CO Tester 1 * User Manual