1. Internal sensor will be installed in tire, external be fixed valve of car through screw. they can get tire pressure and temperature, then send them by wireless of 433.92mhz
2. Receiver will get all tire data from sensor, such as tire pressure, temperature, sensor battery voltage, and all tire status,then send them to can-bus internet
3. We suggest to use a repeater when you install the receiver in the driver room of  travel rv, in order to get better signals from sensor, but if we install the near of RV tire, no need repeater again, but you must have can-bus port in RC travel.