Extech 406800 Digital Differential Pressure Manometer is designed to measure differential and gauge pressure from 0 to 138.5 inH20 (inches of water). The Extech 406800 features 11 units of measure, MIN/MAX recall functions with time stamps, an integrated RS-232 port for direct PC connection, and compensated temperature range from 32 to 122°F (0-50°C).
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
