DDH 7451 Duct Humidity Sensor Specification and Installation Guide

This document is a specification and installation guide for the Satchwell DDH 7451 duct-mounted relative humidity sensor, which provides a 0-10V or 0-20mA output for use with Satchwell controllers. It details features, electrical connections, wiring diagrams, mounting instructions, maintenance procedures, and technical specifications including accuracy, temperature limits, and construction.