Due to the included over voltage protection on the the circuit board of the TireMinder signal booster, a fuse is not needed. Below are the minimum and maximum booster DC voltage specifications. Due to this wide range, the DC voltage in your RV should not be high enough to cause damage to the booster.
| Minimum Voltage | 7V DC |
| Maximum Voltage | 37V DC |
| Maximum Working Current | 100mA |