Differential pressure probe 100 hPa (+/- 40″ WC)$655.00 Testo 445, 510, 511, 512 Call us for a quote Product Model: 0638 1547 Differential pressure probe 100 hPa (+/- 40" WC) quantity Add to cart SKU: 0638 1547 Category: Testo Sensors Parts & Accessories Tag: Testo Sensors Parts & Accessories Description Description Testo 445, 510, 511, 512 Related products CO2 replacement sensor kit with board0 out of 5 Read more NO replacement sensor (0-3000 ppm 0.1 ppm resolution H2 compensated)0 out of 5 $868.00 Add to cart Self service replacement O2 sensor – 325-1 & 325-2 only0 out of 5 $131.00 Add to cart