3 function probe (temp RH & flow) for 435$689.00 Testo 435 Call us for a quote Product Model: 0635 1535 3 function probe (temp RH & flow) for 435 quantity Add to cart SKU: 0635 1535 Category: Testo Sensors Parts & Accessories Tag: Testo Sensors Parts & Accessories Description Description Testo 435 Related products Self service replacement O2 sensor – 325-1 & 325-2 only0 out of 5 $131.00 Add to cart Probe extension cable 16′0 out of 5 $135.00 Add to cart 3.9′ with 13′ stainless braided TC lead, 8 pin connector0 out of 5 Read more