The intelligent precise use electri-chemical type to measure the , can quickly response to , sound and level can be set manually. tool for home, agriculture, chemmical industry, general industries.

Features:
PROFESSIONAL -- Portable (O2) , measure 0-25% content. Adopt electri-chemical type to measure, this with stable performance and  high accuracy.
ADJUSTABLE -- Sound and dual- when O2 concentration reaches the level of the .  And the value can be customized according to users demands.
BACKLIT LCD DISPLAY -- The meter is compact and lightweight, features a large LCD display with backlight, you can get the from the screen at a glance, even in dark,easy to carry on and convenient for reading.
USB RECHARGEABLE -- Come with a 3.7V rechargeable , through USB interface, which can be powered by , , etc..
WIDELY APPLICABLE -- The detectorCs can be used in metallurgy, plant, chemical, mine, tunnel, underground pipelines and other places, effective of hypoxia and poisoning.

Speicification:
Color: Black + Blue
Material: ABS
Detecting :
Voltage: AC100-240V, 50/60Hz
Output: DC5V, 1000±50mA
Measuring : 0~25%
Resolution: 0.1%
Basic Error: ≤ ±5% full scale
: -10~50℃
Resolution: 0.1℃
Working Humidity: 1%RH~99%RH
Response : ≤15S
Recovery : ≤15S
Mode: Acoustic and
Auto Off: Mannual Selectable (10 mins no any press down)
: 1 * 3.7V, 1000mAh rechargeable li-ion
Screen Size: 4.4 * 5.3cm / 1.73 * 2.08in
Item Size: 180*65*30mm / 7.09*2.56*1.18in
Item Weight: 182g/6.42in

Packing List:
1 *
1 * USB Cable
1 * User Manual
1 * Carry Bag