# Pairing STRwrench to an External Controller for Bluetooth Connection

In order to set a Bluetooth connection between the STRwrench and an external controller, the tool must first be paired with the external controller.
The pairing procedure must be performed only the first time you connect the STRwrench to the external controller.

During the pairing procedure the STRwrench must be set to zero. If your STRwrench is on, before performing the pairing you can either turn it off and on again, or disconnect and reconnect the smartHEAD to the wrench, in order to make the tool perform a zero adjustment.

In this Section

- Pairing STRwrench to Power Focus
- Pairing STRwrench to STpad
- Pairing STRwrench to STpalm