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◕‿◕Oxygen detector, is a personal portable gas detection and alarm instrument and its sensor using electrochemical principle, responsive, and applies to in the industrial and mining enterprises in the environmental air continuous detection of the percentage of oxygen concentration, when the high concentration environment, high limit, low limit of sound, light, vibration alarm, warning site personnel to evacuate as soon as possible danger zone. ◕‿◕Features: Appearance of light and novel, easy to carry, easy to operate. Menu operation interface, battery power real time display. Under voltage, low voltage automatic shutdown. Rapid response and reliable accuracy. Sound, light and vibration alarm. ◕‿◕Specification: Sensor: Electrochemical Principle Test Gases: Oxygen Concentration (O2) Temperature Measurement: Ambient Temperature Display Unit: O2: %VOL Temperature: ℃/℉ Measurement Range: O2: 0 ~ 25%VOL Temperature: -15~50℃ / 5~122℉ Resolution: O2: 0.1%VOL Temperature: 0.1℃ / 0.1℉ Accuracy: O2: ±3.0%FS Temperature: ±1.5℃ Response Time: T90