LCD Combination CO Sensor Carbon Monoxide Gas Detector Alarm Operated AVE

Feature: 1. MCU processing and SMT manufacturing technology 2. High-precision electrochemical sensor 3. 3-5 years sensor life 4. 85dB alarm sound 5. LCD display 6. Simple installation 7. Low battery warning 8. Manual test/Auto reset Specification: Power: 3*AA batteries (not included) Sensitivity/Alarm Time: 50 ppm in 60~90 minutes; 100 ppm, within 10~40 minutes; 300 ppm in 3 minutes Quiescent current: <80uA (200uA when the LCD is on) Alarm current: <80mA Audibility: 85dB (1m distance) Frequency: 3±0.5KHZ Operating Environment: 0-45°C Ambient humidity: 20~95%R.H Alarm output: 85db/1m, 3Khz frequency, red LED light flashes quickly Static output: Green LED flashes every 30 seconds Low battery warning: "di" beeps every 30 seconds, "lb" is displayed Size 100mm*38mm Package list: 1 x Carbon Monoxide Detector 2 x screws 1 x English User Manual notes: 1. Due to manual measurement, please allow 1-3mm error. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks!