Light Engineered Displays Temperature and Humidity Sensors - Manual (Page 2)

Model HHD - Humidity Detector - High/Low Alarm
1. Wires are coded for simplicity
2. Red and Black are used for Low Humidity Alarm. This normally open connection will close to initiate an
alarm on the Annunciator, whenever the humidity falls below the adjustable point.
3. Red and Blue wires are used for the High Humidity Alarm. The connection will close whenever the
humidity exceeds the adjustable setpoint.
4. Do not attempt to use a single controller for both high and low alarm.
Model HTD - Temperature Detector - High/Low Alarm
1. Terminals are labeled as following: cool, heat and common.
2. Common and cool are used to initiate a high temperature alarm.
3. This circuit closes whenever the room temperature exceeds the adjustable setpoint.
4. Common and heat can be used to initiate low temperature alarm.
Instruction Instructions / Mounting Detail
ACCESSORY
(OPTIONAL)
USE 2x4
JUNCTION
BOX
TABS HOLD COVER
ASSEMBLY AT TOP
(SNAP IN AT BOTTOM)
MOUNTING SCREW (2)
SENSORS
ENVIRONMENTAL