Features:
Providing continuous， reliable protection.
High precision， durable and of high quality
One of the most cost-effective gas detection solutions for facility workers and onsite contractors.
Test all contain halogen\'s refrigerants
USES the high quality sensors， the work high sensitivity， long life expectancy

Specifications:
Test gas: oxygen
Measurement range: 0~25%VOL
Measurement error: ±2%
Resolution: 0.1%
Preheating time: <10 seconds
Response time: <15 seconds
Environmental temperature measurement: -15 ~ 50 Celsius
Alarm mode: sound alarm， light alarm， vibration alarm
Alarm: low concentration 19.5%VOL yellow warning light flashing
High concentration 23.5%VOL red warning lights flashing
(alarm concentration can also be set up)
Continuous working time: 6 hours (with a slight change in the working state)
Power: 3x1.5V AAA battery(battery is not included)
Audio tip: the higher the frequency of the beep sound， the higher the concentration is.
Product size: 120*65*25mm

Package includes:
1 x Oxygen O2 Gas Detector(battery is not included)