Parts Temp Probe (Ruby Pro) PreviousTemp Probe (Weldless) NextShielded Temp Probe (Ruby Pro) Temp Probe (Ruby Pro) Temp Probe (Ruby Pro) $50.00 These temp probes are replacements for the Ruby Pro systems. They are 1 1/2” Tri-clamp with an M12 type connection Quantity: Add To Cart Facebook0 Twitter You Might Also Like Sold Out Temp Probe 4" (Weldless) $45.00 Temp Probe (1/2 NPT) $38.00 Ignition Wire Set from $8.00 Sold Out Sensor Cable (144" for Electric Systems) $30.00 Sensor cable (for gas fired systems) - New Style (identical ends) from $22.00