a) Monitor

* Solar power monitor

* Reliable and easy to install

* Pressure & temperature Alerts

* Motion sensor inside

* Displays 4 tires' pressure and temperature simultaneously

* Built-in rechargeable battery

* Configurable high/ low pressure alerts

* Configurable high temperature alerts

b) External Sensor

* Small in size, easy to install

* Battery replaceable

* Waterproof & high/low temperature resistant

* Reliable function

c) Internal Sensor

* Adjustable installation angle

* Waterproof & high/low temperature resistant

* Reliable function