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• Easy to read 6999 count backlit displays carbon monoxide gas levels from 0 to 1000ppm
• Record logging (3 sets)
• Visible and audible alarm : >= 40ppm
• Zero point adjustable, gas provision stored permanently
• Auto power off, data hold, low battery warning
• 3.7V 650mAh Li cells employed, recharging anywhere

• MODEL: DY881
• Detection carbon monoxide (CO)
• Sensor: electrical chemistry sensor
• Bootup time: <= 20 seconds
• Range of detection: 0 ~ 1000ppm
• Resolution: 1ppm
• Accuracy: 5% or 10ppm
• Alarm frequency: 200Hz ~ 5kHz
• Range of alarm: >= 40ppm
• Alarm mode: LED, buzzer
• Working temperature: 0°C ~ 50°C
• Working humidity: under 90% RH
• Power Source: Li cell 3.7V 650mA/h
• Battery Indication: LCD displayed
• Auto Power Off: 10 minutes after standby (buzzer alarm in last 30 seconds)
• Dimension: 275 * 70 * 30 mm
• Sensor Life time: >= 5 years
• Weight: approx. 220g