Novanex analog PoE clocks come in two versions: single clocks to hang on the wall using the theft and earthquake resistant slot in the case, and fully assembled double-sided models that are ready to fasten to a double electrical switch box (shown). Our double-sided model ONTA12DS-BK only requires one PoE cable to power both sides of the clock assembly. Novanex clocks are made in the USA from US and imported components and are warranted by us for five years.