"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"