Translations:KAVAN Smart PRO TW30 Power switch with telemetry - Instruction manual/5/en

From KAVAN RC Wiki

TW30 installation

Plug the device between the receiver and the battery. If you use a BEC, plug the TW30 between the battery and the BEC. Remember, in this case, you need to remove the red wire from the extension between the TW30 telemetry port and the receiver's telemetry port.