Feature:1. Cutting-edge CO Detection: Feature a highly sensitive sensor capable of detecting carbon monoxide concentrations within a coverage of 0-999PPM. This ensures that even low CO levels, provide early warning to potential threats.2. High-Clear Display: The built-in LCD display of the portable carbon monoxide tester provides real-time monitoring, allowing users to easily read and interpret the current CO levels in the surrounding environment.3. Practical Functions: Equipped with high-strength ABS shell. Anti-lost lanyard design, easy to carry with you. multi-function buttons, voice alarms, and other functions to meet your usage needs, ensuring a long service time.4. Alarm Design & Compact Size: Numerical value, red backlight, and triple beep alarm modes design, more accurate and reliable. Compact body design, simple and stylish appearance, lightweight, and easy to carry.5. Wide Use: With high sensitivity, superior interference resistance ability, and stable operating performance. It's perfect for camping, picnics, homes, and living rooms with a fireplace, kitchen, bathroom, garage, and so on.Specification:Color: Black, White (Optional)Material: ABSBattery: 2*AAA BatteriesDetection Scope: 0-999PPMItem Size: 13.4 * 3.2 * 1.6cm/5.28 * 1.26 * 0.63inItem Weight: 58g/2.05ozPackage Size: 13.8 * 10.5 * 2.6cm/5.43 * 4.13 * 1.02inPackage Weight: 80g/2.82ozPackage List:1*Detector1*Lanyard1*User Manual