The WSK-24 and T7350/T7351 thermostats have reverse logic for switching between occupied and standby. The receiver for the Wireless Occupancy Solution has a normally open (N.O.) relay, which translates to an occupied state. The occupied state on the T7351 and T7350s assumes that the dry contact inputs are normally closed (N.C.). Therefore, a low voltage switching relay will need to be used to reverse the logic of the dry contact input in order to use the WSK-24 Wireless Occupancy Solution with a T7351 or T7350 thermostat.