Handheld Digital Oxygen Detector Rechargeable O2 Tester D3H3 New
ADJUSTABLE ALARM — Sound and light dual-alarm when O2 concentration reaches the level of the alarm. 1 Oxygen Detector. Detecting : Oxygen. Alarm Mode: Acoustic and Light. Screen Size: 4.4 5.3cm / 1.73 2.08in.
Handheld Digital Oxygen Detector Rechargeable O2 Tester D3H3 New
ADJUSTABLE ALARM — Sound and light dual-alarm when O2 concentration reaches the level of the alarm. 1 Oxygen Detector. Detecting : Oxygen. Alarm Mode: Acoustic and Light. Screen Size: 4.4 5.3cm / 1.73 2.08in.
Handheld Digital Oxygen Detector Rechargeable O2 Tester D3H3 New
ADJUSTABLE ALARM — Sound and light dual-alarm when O2 concentration reaches the level of the alarm. 1 Oxygen Detector. Detecting : Oxygen. Alarm Mode: Acoustic and Light. Screen Size: 4.4 5.3cm / 1.73 2.08in.