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 Temp Probe (1/2 NPT) $38.00 Temp Probe (Weldless) $42.00 Ignition Wire Set from $8.00 Sensor Cable (3 meter) - Fits Ruby Pro Electric Systems $20.00 Sensor cable (for gas fired systems) - New Style (identical ends) from $22.00