SINPO SPO201 small Size Type Oxygen(O2 ) Alarm Detector Measuring 0~25% gas analyzer gas detector alarm gas leak detector

Features:
Use the imported Oxygen sensor, high accuracy and stable performance.
Adopt Intellectualized design,to realise multi functions.
High LCD backllight display, acousto-optic alarm, easy to operate.
The in-built temperature compensation makes the meter measure accurately from ﹣10°C  to 40°C. 
The ergonomicalcase design provides an exquisite apperance, good texture and convenience.
                                                                             
Specifications:
Model: Oxygen Gas Alarm Detector SPD201/O2                                         
Measurement display: displays 4 digit LCD
Operation temperature: -10~40C (14~104F)
Storing temperature: 0~30C (32~86F)
Operation humidity: 0~99%RH (relative humidity)
Storing humidity: 20%~80% RH (relative humidity)
Measuring range: 0~25%(VOL)
Resolution: 0.1 %( VOL)
Measurement tolerance: +/-0.5%
Over measurement range display: --OL--
Alarming method: acousto-optic alarming
Working principle of the sensor: Source battery sensor
The service life of the sensor: 2 years (it can then be replaced)
Power supply: 3 * 1.5V AAA alkaline batteries(not included)
Battery service life: about 100 hours of continuous use (when the backlight is off).
Product Size: 172 * 51 * 26 (mm) 
Package Size: 26 * 17 * 6cm / 10 * 7 * 2.3in
Package Weight: 488g / 1.1lb
Package List:                                                                       
1 * SINPO SPO201 Oxygen(O2 ) Alarm Detector
1 * Carrying Bag
1 * English Manual