The Gallagher Flood Gate Controller device is especially for ditches that can be mounted on a fence. It stops the current flowing through the bottom line if the water (or another resistance) reaches the bottom wire. The rest of the wires will keep its voltage.

Top features Gallagher Flood Gate Controller:

• Automatically switches powered flood gate off when the river is in flood
• This prevents the whole fence being shorted out
• If high flood level is expected to remain for some time, switch flood gate off
• Has a resistance of 5600 Ohm