Oxygen Detector O2 Gas Concentration Leakage Detector Handheld Air Oxygen Content Tester Oxygen Detector Audible And Visual Alarm Wrenches & Pliers the effective transmission rate/reception rate

the effective transmission rate/reception rate are both improved

anti - rust and high temperature resistant

built-in clapboard

Gross weight of packing：7

so that it can keep you safe the entire time in your working place

Oxygen Detector O2 Gas Concentration Leakage Detector Handheld Air Oxygen Content Tester Oxygen Detector Audible And Visual Alarm Wrenches & Pliers the effective transmission rate/reception rateShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Packing List Oxygen detector * 1 Features Soft keys feel comfortableAdopt high quality rubber material, light touch comfortable, easy to operate for a long time, not easy to fall off. Flashing alarm lightRed alarm light, intuitive design, eye catching position.