The Honeywell STD720-E1AC4AS-1-A-AHC-11S-A-00A0-00-000 is a high-performance transmitter from the STD700 Series, designed for precision measurement in demanding environments. This model features FM Explosion Proof, Intrinsically Safe, Non-incendive, and Dustproof approvals, ensuring reliable operation in hazardous locations. Constructed with a 316 Stainless Steel wetted diaphragm and filled with Silicon Oil 200, it offers an adjustable range of -400" to 400" H2O. The device utilizes a 4-20mA dc/HART output protocol for seamless integration. Its housing is made of polyester powder-coated aluminum with a 1/2" NPT connection, and the gasket material is Teflon or PTFE (Glass Filled). With standard diagnostics and factory standard calibration, this transmitter is ideal for various industrial applications.