Retrofit Pressure Switch - Neotherm 80-210, Hydronic Control Panel, Device voltage and interlock voltage must be in phase, Device voltage requires a class 2 transformer, Device voltage: (J8-1) 24 VAC 60 Hz, Interlock Voltage: (J5-1) 24 VAC, Temp. Range: -4ºF to 150ºF, Fernco Pipe Length: 6 5/8â€, 1 1/2†CI/PL TO 1 1/2†CI/PL, Diameter of white pipe: 1 5/8â€, Inside Diameter of black pipe: 2â€, Pressure Switch: FS @ .15†WC PF-V, Max Wire Length: 20 3/4â€, Attached Bracket Dimensions: Approximately 3 5/8†x 1 3/8†x 2â€, Silicone Tube Length: 39 1/4â€