🔥 UL 2034 Compliant Carbon Monoxide Detector Alarm - 2-Pack, Digital Display, Beep Warning for Home, Office, Kitchen, Garage, and More by GLBSUNION Review

✅UNIQUE DESIGN —Product Dimensions: 4 * 4 * 1.5 inch, Portable and easy installation. Precise electro-optical sensor, high consistency and stability, move, or in the same place for that. Beep Warning Voice Loud enough and sounds good. 【✅NOTE: IN NORMAL CONDITION, LCD IS NOT LIT FOR SAVING ENERGY (ENTER THE STANDBY STATE, AND STILL KEEP DETECTING/ALARMING). LCD WILL BE LIT TO DISPLAY THE ACTUAL CONCENTRATION AS CO LEVEL OVER 30PPM OR AS THE TEST/RESET BUTTON PRESSED】. ✅ALARM WARNING — When a Dangerous level of Carbon Monoxide is detected, the Red LED will flashes and a loud alarm pattern will sound, Loud 85 decibel Beep Warning alarm with LED Flash While in the Alarm Mode for the Life-Saving Safety. ✅SAFETY AND VISIBLE— Protect Our Family from CO, With 3 digits LCD Displayer is Optional, 'Err' indicates the unit malfunctioning. 'Lb' indicates it low battery & need to replace. '999ppm' indicates CO level over 999ppm. ‘actual concentration’ when less than 999ppm, ✅NOTE:LCD not lit when less than 30 PPM. ✅ENERGY-SAVING — Operated by 3 x 1.5V AA Batteries (not included), The alarm sound pattern is 4 beeps every 5seconds for the first 4 minutes. In 4 minutes, it will change to 4 beeps ever minute to save the battery. 【✅NOTE: IN NORMAL CONDITION, LCD IS NOT LIT FOR SAVING ENERGY (ENTER THE STANDBY STATE, AND STILL KEEP DETECTING/ALARMING). LCD WILL BE LIT TO DISPLAY THE ACTUAL CONCENTRATION AS CO LEVEL OVER 30PPM OR AS THE TEST/RESET BUTTON PRESSED】. ✅ALARM STANDARD — 50ppm, alert within 60 to 90 minutes; 100ppm, alert within 10 to 40 minutes; 300ppm, alert within 3 minutes. Note: When you test the detector, please do not use gas blow the hole directly. What's in the Box: 2 x Alarms; 4 x Screws; 2 x User Manual.