Feature: 1. Portable CO Detector: Compact and portable, this rechargeable CO detector is suitable for camping, tents, hotels, rooms, homes, boats, and vehicles. Ensuring safety wherever you go. 2. Water Resistant Design: This CO detector can operate normally in various humid environments, providing more safety assurance in places like bathrooms, kitchens, and outdoors in the rain. 3. High Sensitivity and Accuracy: Equipped with an electrochemical sensor, this CO meter can detect CO levels up to 999ppm with a refresh rate of 2S, ensuring prompt and accurate warnings to prevent CO poisoning. 4. 1000mAh Battery Rechargeable: Ensure your safety with our portable CO detector battery powered. Built in 1000MAH rechargeable battery, ideal for travel, vacation, camping or any outing. 5. Wide Application: Apply for camping, tents, hotel rooms, homes, boats, and vehicles, this CO detector offers high sensitivity and accuracy, alerting you to dangerous levels of CO before it becomes a threat. Specification: Item Type: Portable CO Detector Material: ABS Weight: Approx. 123.00g / 4.34oz Battery: Polymer Lithium Ion Battery 1000MAH (Included) Detection Technology: Electrochemical Sensor Detection Range: 0-999ppm Working Humidity: 5-95% Working Temperature: -10-50℃ Data Refresh Rate: 2S Display Mode: Ultra HD Color Screen, Battery Level Display. Audible Alarm At 50ppm, Repeat Every 3 Minutes. Diameter: 63.3mm / 2.5in Thickness: 20mm / 0.8in. Package List: 1 x Portable CO Detector2 x User Manuals1 x Data Cable