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IMS-4000 Manual
IMS-4821 Room Humidity Sensor with display
Installation Instructions
Introduction
The IMS-4821 humidity sensor is designed to connect
to the IMS-4000 Host or Node and monitor indoor
humidity. The electrical connection between the sensor
and IMS-4000 is made via RJ-45 patch cable (not
included). The sensor may be mounted either on a wall
or to a single-gang electrical box.
Package Contents
(1) IMS-4821 Humidity sensor
(2) Plastic drywall anchors
(2) #6 Metal tapping screws
(1) 1/16" hex key
Cabling
The humidity sensor connects to the IMS-4000 Host or Node via an RJ-45 cable (e.g. CAT5 cable).
The connection from the sensor to the Host or Node can utilize your existing network wiring infra-
structure. For example, the sensor may be installed in another room or another floor. Connect the
sensor to your structured wiring network via an RJ-45 jack. At the other end, connect a patch cable
from your structured wiring patch panel directly to the Host or Node environment input.
Caution: The IMS sensors are not TCP/IP devices and therefore should not be connected
!
directly to any wiring infrastructure that is connected to network equipment such as a
hub, router, or switch. Sensors use RJ-45 plugs and cables similar to those used with
Ethernet devices.
Mounting
The humidity sensor can be mounted directly on a surface or attached to a single-gang electrical
box. Consideration should be given to cable routing before attaching the sensor to the wall. Will the
cable go through the wall (cable hidden) or will it run down the wall (cable visible)? Once this has
been determined, run the cable to the location where the sensor will be installed.
Electrical box installation
Bring the RJ-45 cable through the electrical box. Remove the sensor cover by turning the two hex
screws on the bottom of the sensor housing clockwise. Bring the cable through the back of the sen-
sor and connect the cable to the jack as shown in Figure 1. Attach the sensor to the electrical box
using the appropriate screws. Secure the sensor cover by turning the two hex screws on the bottom
of the cover counterclockwise.
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