Testo IAQ probe (CO2 humidity temperature)$999.00 Testo 435 IAQ probe (CO2 humidity temperature) for 435 32 to 122°F / 0 to +52°C 0 to +100 %RH 0 to +10000 ppm CO2 +600 to +1152 hPa Call us for a quote Product Model: 0632 1535 Testo IAQ probe (CO2 humidity temperature) quantity Add to cart SKU: 0632 1535 Category: Testo Sensors Parts & Accessories Tag: Testo Sensors Parts & Accessories Description Description Testo 435 Related products 10.5′ with 13′ stainless braided TC lead 8 pin connector0 out of 5 $420.00 Add to cart SO2 replacement sensor (0-5000 ppm 1 ppm resolution)0 out of 5 $525.00 Add to cart 5′ probe connection cable0 out of 5 $60.00 Add to cart