62 General tips Useful tips from our experts ... please note! Tip 1 1. Remove the knurled nuts from the earthing and fence output. 2. Contact the earth output on the device using the fence tester’s earthing rod. 3. Contact the fence output on the device using the fence tester. Tip 2 1. 9 volt battery: flashing red - battery is flat 2. 12 volt battery: flashing red -battery is flat 3. 230 volt mains power: LED not flashing - no power supply Tip 3 1. Switch the device off. 2. Disconnect the fence supply cable at the fence. 3. Switch the device back on. 4. Using a fence tester, measure the voltage at the end of the fence supply line cable.
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