Before installing your FenceAlarm it is good to consider how your fence is built and how the voltage travels through the thread. It is also important to understand that FenceAlarm can only measure the voltage where it is connected to the fence. 

Below are some examples to understand how the voltage travels in a fence and what changes FenceAlarm will notify you about. Ⓔ means Energizer. 



Example 1: Simple pasture. 

Voltage travels in both directions. If the thread is grounded (for example, the fence fell and the thread is touching the ground), FenceAlarm can detect the drop in voltage at any position.













Example 2: Voltage in 1 direction (anti-clockwise).












Example 2a) Gate open but no grounding on the side where the voltage comes from: The fence before the gate will have high voltage and the fence after the gate will have 0 V. 

















Example 2b) Gate open and the thread is on the ground. 

The fence before the gate will have significantly lower voltage and the fence after the gate will have 0 V. 

 








Example 3: Voltage travels in both directions: If the energizer powers in both 

directions, it will become very low if the thread is grounded but if kept in the air (ungrounded) then the voltage will be high in all positions of the fence.



 


 



 





 

Key points to consider when installing FenceAlarm:

  • Position of the energizer
  • Does the energizer send electricity in the fence in both directions? 
  • What do you want to detect? Open gates? Breaks in the fence? Thread touching the ground?
  • Position and quantity of FenceAlarm needed