The SPK3 Rod temperature probe makes it easy to take in-duct measurements with a piercing tip and rod hook so the SPK3 can hang hands-free from registers and ductwork. Detents lock the probe into place so technicians can open the probe part-way. The convenient flip display ensures the readings are always facing the correct direction whether the SPK3 is in IR or ROD mode. And the probe folds into the body for storage and protection. Features of the SPK3 include Max/Min, Hold and T1-T2 functions for either IR or ROD mode. The backlit display automatically flips in ROD mode for hanging on duct walls. The hanging hook also keeps the probe in place for hands-free testing.