In real time, monitor the temperature and pressure in all your tires (Up to 35) wirelessly. Sensors can handle 0 to 225 psi. Special antenna eliminates any inference from other sources. Includes 2 sets of antenna to install on the unit, or outside of the cab. Bright 3LCD display. With special air-leakage alarm to notify you if there is a leakage before the lower limit of air pressure is reached. Dual power monitor operates on included rechargeable battery, or via included cigarette adapter to your vehicle. Package includes 20 sensors and a signal booster. Can easily add more sensors to monitor more tires (up to 36). Extra heavy duty sensors. 3.5″ wide x2.25″ High x 1 deep, weight: 2.2 oz. Operating Temperature:(-4 F-176F). Input Voltage: DC 8V-16V. Transmitting Frequency:433.92MHz. Operating Temperature:(-4 F-212 F). Storage Temperature:(-4 F-212 F). Pressure Precision:±1.5PSI(±0.1bar). Battery Life:>3 years. Size:Height:1/2″;Diameter:15/16″. Weight:0.35 oz. High pressure: 175 PSI. Temperature high: 149 F. What is in the box. Mount for any flat surface. 16x watch battery for sensors. 16x anti theft nuts. T type extension antenna. Rechargeable battery for monitor. Cigarette lighter power adapter with operating light.