Device 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. Has a resistance of 5600 Ohm
- 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