In real time, monitor the temperature and pressure in all your tires (Up to 36) 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 3 LCD 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 18 sensors + signal booster. Can easily add more sensors to monitor more tires (up to 22). 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. 12x watch battery for sensors. 12x anti theft nuts. T type extension antenna. Rechargeable battery for monitor. Cigarette lighter power adapter with operating light.