Testo 350 NO(Low) Sensor Upgrade Module (0-300ppm)$1,974.00 Testo 350 NO Sensor Upgrade Module (0-3,000ppm)(0.1 ppm resolution) Call us for a quote Product Model: 0554 2152 Testo 350 NO(Low) Sensor Upgrade Module (0-300ppm) quantity Add to cart SKU: 0554 21521 Category: Testo 350 Emission Analyzers: Kits Sensors Upgrades Accessories & Probes Tag: Testo 350 Emission Analyzers: Kits Sensors Upgrades Accessories & Probes Related products Testo 350 SO2 Sensor Upgrade Module (0-5000ppm)0 out of 5 $1,974.00 Add to cart Testo easyEmissions Software for Testo 300 340 & 350 with USB to mini USB cable0 out of 5 $638.00 Add to cart Testo 350 CxHy Sensor Upgrade0 out of 5 $1,990.00 Add to cart