The portable 3-in-1 carbon monoxide detector can monitor the current CO concentration, temperature and humidity in the air in real time.Equipped with high-precision sensors, the detectable carbon monoxide concentration range is 0-500PPM, the temperature range is 32-122(2.7)/0-50(1.5), and the humidity range is 20-80%RH (5%RH).The carbon monoxide alarm can display 3-level light indications according to the CO concentration in the air. 0-49ppm (green area flashing = safe), 50-99ppm (yellow area flashing = warning), 100-500ppm (red area flashing = danger). By default, the CO alarm sound an alarm when it reaches 50PPM.Built-in lithium battery, power supply. Support QC2.0, PD3.0, AFC, USB C UFP (BC1.2 DCP ) and other common fast charging protocols 10-65W charging.Equipped with a special outdoor lanyard, it is easy to carry, suitable for outdoor activities such as travel, camping, picnic, and adventure. There is also a magnetic feature on the back of the CO monitor, allowing it to be attached to metal areas such as appliances or cars. Colour:WhiteMaterial:ABS Package Contents:1 x Detector1 x lanyard1 x USB data cable1 x English manual Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.