Feature: 1. [High Performance] This CO detector has a wide measurement range of 0 to 500 ppm, ensuring accurate detection and timely alarm. 2. [Multi Function] In addition to detecting CO levels, this device can also measure temperature and humidity, providing comprehensive air monitoring. 3. [Backlit Display] Equipped with a backlit display, this CO detector offers clear and intuitive readings, easy to monitor the air quality at a glance. 4. [Compact and Portable] With its mini size, this CO detector is easy to carry whether you are at home, school, office, on a business trip, or travel. 5. [Long Standby] With a USB cable and built in 1000mAh lithium battery, this CO alarm can be charged and will provide long standby time after a full charge. Specification: Item Type: CO Detector Material: ABS Model: PTH 10D CO: 0-500 ppm (±10%) CO Over Limit Alarm: (Initial default value) 50 ppm Temperature: 0℃ to 50℃ (±1.5±), 32℉ to 122℉ (±2.7℉) Humidity: 20% to 80% RH (+5%) Power Supply Battery Specification: Polymer lithium ion battery 1000mAh (built in) Input Parameters: Type C, DC 5-24V (Maximum) Fast Charging Protocol: Fast charging protocols such as QC2.0, PD3.0, AFC, USB C UFP (BC1.2 DCP SDP) Storage Temperature: -10℃ to 70℃ 14℉ to 158℉. Package List: 1 x CO Detector1 x Charging Cable1 x Handheld Rope1 x User Manual Note: 1. This product belongs to a non household level alarm and is not a security product. 2. The CO measurement function and excessive alarm provided by it are for reference only and cannot be used as the sole basis. 3. During daily use, attention should be paid to maintaining good ventilation at all times to avoid danger!