"receiver system parameter Working temperature: - 20 ~ 80 c. Degree Storage temperature: - 30 ~ 85 c. Degree The charger input voltage: dc 8 ~ 30 v Frequency: 433.92 mhz Size(l*w*h):77*18*38.5mm Weight:28g Sensor parameter Working temperature: - 40~ 80 c. Degree Storage temperature: - 40 ~ 85 c. Degree Pressure range: 0-6.8 bar, 0-99psi Pressure accuracy: + / - 1.5 psi (0.1 bar) - Temperature accuracy: + / - 3 c. Degree Transmission power: < 10 dbm Transmission frequency: 433.92 mhz Battery life: 2 years, the battery can be replaced Size(l*w*h):20.5mm(diameter)20.5mm(height) Weight: 9 g"
The face mask is intended for use as source control, by members of the general public as well as healthcare professionals in healthcare settings. The mask covers the user's nose and mouth to help prevent the spread of infection or illness during the COVID-19 pandemic.
