Absolute Automation Knowledgebase » Water Bug
The WaterBug units relays are in “alarm” states until powered is applied to them. So with this in mind the NO relay will read as closed and the NC relay will read as open until power is applied. This helps ensure that should the WaterBug lose power it will trigger an alarm.
The placement of the sensors is really at the customers discretion. In a perfect world there would be a sensor everywhere water could be leaking but that may not be practical. The actual sensors should be placed slightly off the floor in most situations so that a damp floor or condensation does not cause a [...]
Supervised sensors allow the WB800 to monitor for the sensor wire being cut or damaged as well as water incursion. The WB800 will accept up to 6 standard sensors per zone or one supervised sensor per zone. Supervised and standard sensors may not be mixed on a WB800. WB350s and WB200s only use standard sensors [...]