Touch Spot Set (TSS-1)
Additional detector can be added to the WD-1 by using the TSS-1 / T-splitter and water detector (sensor) set. It comes with a T-splitter and an additional water detector in order to have multiple points to detect water by using a single WD-1 module. This is useful when trying to monitor for water spills or floods, or to monitor water run-off at multiple locations.
Touch Spot Extension Cable (TSS-2)
The TSS-2 Extension Cable is simply a 16 ft extension cable to use with the WD-1 water detectors. It has a male and female end and can extend the distance between 2 sensors (or distance between WD-1 module and the sensor).