General description This 3-in-1 Carbon Monoxide Detector is a compact and lightweight device that monitors carbon monoxide levels, humidity, and temperature. It features a built-in rechargeable battery, ensuring it remains operational during power outages, making it ideal for home, travel, camping, and car use. Technical specifications Built-in Lithium Battery: 1000mAh rechargeable Detection Range: 0-999 ppm (±5%) Sensor Response Time: Every 2 seconds Dimensions: 3.35" x 2.01" x 1.30" Weight: 2.12 oz Alarm Volume: 85dB Display Size: 2.1 inch LED Usage Real-time detection of CO, humidity, and temperature Adjustable brightness settings: high, low, and off Intuitive interface with color-coded alarm system: green (safety, CO < 50 ppm), orange (caution, CO 50-200 ppm), red (high, CO ≥ 200 ppm)