The item in this listing is an Open Box (packaging maybe slightly distressed). The unit powers on with factory settings restored and includes the original accessories. The unit may have some minor cosmetic marks. Product comes with a Minimum 90 days warranty

• 3-In-1 Portable Carbon Monoxide Detector: Equipped with a high-definition color screen, it can display temperature, humidity, and carbon monoxide concentration at the same time.
• Concentration Range: Carbon monoxide is detected by an electrochemical sensor, and the measurement range of carbon monoxide is 0-1000PPM, accuracy is ±5PPM.
• The temperature and humidity use an imported Swiss sensor and support a quick refresh of 2 seconds. The temperature measurement range is -10°C-50°C(14℉-122℉), the accuracy is 1℃(±2℉), the Humidity measurement range is 0 ~ 95%, and the accuracy is ±5%.
• LSENLTY CO detector is equipped with a notification function. When the value exceeds 50PPM, an alarm will be issued. As the PPM value increases, the frequency of the alarm will increase. If you need to turn off the alarm sound, you can press the “S” key to turn off the alarm sound.
• 3 buttons are easy to use, long press the “ON/OFF” button to switch it on and off. Short press the “ON/OFF” button to switch between ℃/℉. Short press the “M” key to adjust the screen brightness. Short press the “S” key to switch on and off the alarm sound.