Data Sheet for Product
Quick Reference
Document No. 149-477
November 2, 2015
Siemens Industry, Inc.
Page 1 of 2
Wireless Room
Temperature
Sensor (WRTS)
Overview
The Wireless Room Temperature Sensor (WRTS) works with the building’s
environmental controls to regulate temperature for a specific area. Three WRTS models
are available: Sensing Only, Sensing with Display, and Full-featured—Sensing with
Display, Override, and Setpoint.
NOTE:
The RJ-11 jack on the bottom of the WRTS is for building system tools only. Do not plug
a phone into the WRTS. (It is normal for tool communications to seem slow through the
WRTS. For faster communications, use the TLX instead.)
Operation
The full-featured WRTS has a display and buttons that you can use to view and change
WRTS information.
NOTE:
To conserve battery power, the WRTS may be configured so its display turns on only
after a button is pushed. After about five seconds, the display will turn off, unless a
button is pushed again.
Viewing the Current Temperature
If the WRTS display is off and you want to view the current temperature reading, press
any of the buttons once. The current temperature displays for about five seconds.
Viewing and Changing the Setpoint
The setpoint is the target temperature for an area. To view or change the setpoint
:
1. Push the + or – button once (twice if the display is off) to view the current setpoint.
2. If you want to change the setpoint, push the + or – button until you see the
temperature you want.
Overriding the Occupancy Mode
The Occupancy mode determines the settings used to heat or cool an area. The WRTS
shows whether the area is in Occupied
or Unoccupied mode. Building control
systems use Unoccupied mode to conserve energy when an area is not being used.
You can override the Occupancy mode and request Occupied mode when you are using
an area outside of normal operating times, such as at night or during the weekend. To
temporarily override the system and change an area from Unoccupied mode to
Occupied mode:
Push the button once (twice if the display is off).
The Occupancy mode icon on the display panel blinks while the request is
communicated to the building control system, and then
displays to indicate the
area is set for Occupied mode.