3-in-1 Carbon Monoxide Alarm CO Tester with Temperature Humidity 0-999ppm Rechargeable Audible Alert Portable for Home Camping Travel

3-in-1 Carbon Monoxide Alarm CO Tester with Temperature Humidity 0-999ppm Rechargeable Audible Alert Portable for Home Camping Travel 3-in-1 Air Quality Tester – Simultaneously tracks carbon monoxide (CO) concentration up to 999 ppm, ambient temperature (°C/°F switchable), and relative humidity, giving you a complete view of your environment. High-Accuracy Electrochemical Sensor – The professional-grade sensor delivers real-time, stable readings so you can respond to rising CO levels without delay. Visual & Audible Dual Alerts – When CO reaches preset thresholds, the screen flashes and a loud buzzer sounds to warn you immediately. The buzzer can be manually turned off once conditions return to normal. Rechargeable & Adjustable Brightness – Built-in 750mAh polymer lithium battery charges via USB-C (cable included), no need for replaceable batteries. Multiple screen brightness levels suit day or night use; smart auto power-off at 20/40/60 minutes saves energy. Flexible Placement & 8 Colors – Includes a kickstand for tabletop use and a wrist strap for hanging in tents, branches, or RVs. Available in 8 stylish colors to match your individual style or home decor. Key Features：3-in-1 Air Quality Tester – Simultaneously tracks carbon monoxide (CO) concentration up to 999 ppm, ambient temperature (°C/°F switchable), and relative humidity, giving you a complete view of your environment. High-Accuracy Electrochemical Sensor – The professional-grade sensor delivers real-time, stable readings so you can respond to rising CO levels without delay. Visual & Audible Dual Alerts – When CO reaches preset thresholds, the screen flashes and a loud buzzer sounds to warn you immediately. The buzzer can be manually turned off once conditions return to normal. Rechargeable & Adjustable Brightness – Built-in 750mAh polymer lithium battery charges via USB-C (cable included), no need for replaceable batteries. Multiple screen brightness levels suit day or night use; smart auto power-off at 20/40/60 minutes saves energy. Flexible Placement & 8 Colors – Includes a kickstand for tabletop use and a wrist strap for hanging in tents, branches, or RVs. Available in 8 stylish colors to match your individual style or home decor.

Technical Specifications：CO Measurement Range: 0–999 ppm Sensor Type: Electrochemical Temperature Units: °C / °F (switchable) Humidity: Relative humidity display Alert Type: Screen flash + audible buzzer (buzzer can be manually turned off) Battery: 750mAh rechargeable lithium polymer (Type-C charging, cable included) Auto Power Off: 20 / 40 / 60 minutes or disabled Display Brightness: Multiple levels adjustable Colors: Silvery, Black, Red, Yellow, Orange, Blue, Green, Off-white Operating Temperature: 0°C to 50°C (recommended)

Package Contents：1 × Carbon Monoxide Alarm 1 × Type-C Charging Cable 1 × Portable Wrist Strap 1 × User Manual 1 × Retail Box