DRH 4401 Room Humidity Sensor Specification and Installation Guide

This document provides the specification, installation, wiring, and maintenance instructions for the Satchwell DRH 4401 room humidity sensor, which uses a foil dielectric capacitive sensing element to measure relative humidity from 20% to 90% r.h. The sensor outputs a 0-10V DC signal proportional to humidity, requires a 15V DC power supply, and is designed for use with specific Satchwell controllers.