Real OEM probes and sensors can lead to lower maintenance costs over time, as they are less likely to need premature replacement compared to generic alternatives. Features. The Lochinvar 100170647 Sensor Kit gathers data continuously to enable realtime adjustments and optimize system performance. Application Flue Temperature. Product Type Sensor KitCompatibility. PF 1002 Cat I, PF 1002 Cat IV, PF 1302 Cat I, PF 1302 Cat IV, PF 1501 Cat I, PF 1501 Cat IV, PF 1701 Cat I, PF 1701 Cat IV, PF 2001 Cat I, PF 2001 Cat IV, PF 502 Cat I, PF 502 Cat IV, PF 752 Cat I, PF 752 Cat IVSpecifications. Key Spec Includes Flue Temperature. Length 6.1 in.. Width 5.1 in.. Height 0.65 in.