What is the difference between supervised and unsupervised waterbug sensors?

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 (up to 6).