A peel assembly for separating a label from a liner is provided. In some embodiments, a first integrated circuit provides a clock signal and a data signal to a second IC, wherein the data bits of the data signal are timed according to the clock signal, and wherein the frequency of the clock signal is capable of being changed even when the data signal is valid. In one embodiment, juxtaposed to the entrance are at least two diverter members angularly offset relative to each other to define a maze-like path to lead a target animal to the charge plates for electrocution while discouraging reversal of direction and protecting against direct access to the charge plates through the entrance opening by children, pets or non-target species. A reagent can be coupled to the microsphere via the enolic acid. The feeder edge of the feeder may include one or more second anti-stub surfaces that are complementary to the first anti-stub surfaces. When the thermistor temperature is above the switching temperature, the thermal protection circuit causes the SMPS controller to produce a signal with a second duty cycle on the output pin.