LSENLTY Carbon Monoxide and Smoke Detector Plug In, Check Smoke, CO, Temperature and Humidity, Visual&Audible Alert for Home Travel Office-L6066

【Plug and Play Design】This CO and smoke detector eliminates the short battery life issues associated with traditional battery-powered devices, enabling continuous 24-hour monitoring. It is compatible with 110V–250V AC power and you can choose from different plug specifications (US, EU, UK) when you place your order. 【2.1-inch HD Display】The 2.1-inch HD screen clearly displays co and gas values as well as temperature and humidity readings, overcoming the issue of unclear displays found on the small screens of traditional CO and smoke detectors. 【Adjustable Brightness】To conserve energy, you can adjust the screen brightness by briefly pressing the "☀️" button. Even when the screen is turned off, the device continues to monitor the air, with an indicator light flashing every 30 seconds to confirm normal operation. 【High-Precision CO and Smoke Detector】This carbon monoxide and smoke detector equipped with a precision sensor; CO detection range: 0-999PPM, and the accuracy is ±5PPM; Smoke detection range: 1%–5% obs/m; accuracy: ±15%; Temp range of 14°F ~ 122°F and an accuracy ±5% Humidity range of 0 ~ 95%RH and an accuracy ±5% RH 【Dual-Sensitivity Mode for Smoke Detect Function】 Briefly press the "O" button three times to toggle between sensitivity levels S1 and S2. S1 offers standard monitoring without false alarms, while S2 provides high-sensitivity detection. (Note: The factory default setting is S1.)