Oxygen alarm BWC2-X 1 piece

This is a disposable wearable oxygen deficiency alarm that is limited to use for two years. Once switched on, it will operate for two years without any maintenance. The remaining expiration date is displayed on the LCD screen. We do not provide maintenance services, including battery replacement. Lightweight, compact, sturdy and portable. Ideal for work safety. Detection principle: Diaphragm galvanic cell type Collection method: Diffusion type Alarm concentration: lower limit alarm 19.5vol% or less, upper limit alarm 23.5vol% or more Alarm function: 95dB electronic buzzer, red LED lamp, vibration Continuous use time: 24 months after power is turned on Power source: Lithium battery (not replaceable) Water and dust proof: IP66 Measurement range (%): 0 to 25 Weight: 92g Size(mm):41×50×87