INSTALLATION & OPERATIONS GUIDE | MICROSET 4
© Honeywell LT-MS4IOG Rev. 04 | Revised October 2015
8
Specifications
System compatibility
The Microset 4 sensors work with legacy VLCs and ROCs, but also support optional new features that
require a new ROC to support. These features include transfer of CO2 data to the VLC, password
protection of Service Mode, user control of LEDs, and data support for controlling a room’s windows
and lights.
Table 2 Microset 4 specifications.
Part Numbers MS4-TH – Base model with temperature and humidity sensing.
MS4-TH-NL – Base model with no Alerton logo.
MS4-TH-MSTP – Temperature and humidity sensing, BACnet MS/TP bus compatible.
MS4-THC – Base model and air quality (CO2) sensor
Power 24 VAC @ 3 VA
MS/TP
(MS4-TH-MSTP model)
MS/TP LAN operates up to 115 Kbps
Dimensions
(MS4-TH, MS4-TH-NL,
MS4-TH-MSTP)
4.370" (111 mm) H x 2.857" (73 mm) W x 0.678"
(17.23 mm) or 0.895" (22.73 mm) D
Dimensions
(MS4-THC)
4.536" (115.22 mm) H x 3.040" (77.22 mm) W x 1.027"
(26.08 mm) or 1.243" (31.58 mm) D
Operating Temp.
Humidity Sensor Accuracy
Repeatability
50–113 °F (10–45 °C)
±3% RH @ 10–90% RH, ±5% @ 0–10% RH and 90%–100% RH
Minimum ±0.5% RH.
CO2 Sensor Operating
Temp (CO2 Sensor not
available on MS4-TH-
MSTP)
CO2 Sensor
Measurement Range
CO2 Sensor Accuracy
-32–122 °F (0–50 °C)
-0–5000 ppm
±30 ppm, ±3% at reading
Ratings EMC Directive 89/336/EEC (European CE Mark).
FCC Part 15, Subpart J, Class B.
UL 916 Certified
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