text.skipToContent text.skipToNavigation

DLM Dual Tech Ceiling Mount Sensor V4, White

LMDC-100 Wattstopper
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getAggregateRating, 2ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

The LMDC-100 low profile Dual Technology Ceiling Mount Occupancy Sensor uses both passive infrared (PIR) and ultrasonic technologies to achieve precise occupancy sensing for energy-efficient control of lighting and plug loads. It is a digital sensor, and is part of a Wattstopper Digital Lighting Management (DLM) system.

Color White


  • Plug n’ Go™ automatic configuration for quick installation and maximum energy savings
  • Push n’ Learn™ functionality for customization without the need for tools or a PC
  • Digital Lighting Management components plug together on a free-topology Category 5e DLM local network
  • Infrared (IR) transceiver for wireless configuration and control
  • Ultrasonic diffusion technology spreads coverage to a wider area (patented); 40KHz signal
  • 360 degree PIR coverage
  • Detection Signature Processing eliminates false triggers and provides immunity to RFI and EMI


General Info
Product Line Wattstopper
Color White
UPC Number 754182926329
Country Of Origin China
Product Width US 4.0 in
Product Weight US 0.42 lb
Product Volume US 44.55 cu in
Product Depth US 4.5 in
Product Height US 2.2 in
Additional Information
DesignLights Consortium Qualified System Yes
Product Environmental Profile Yes


  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 3ms
  • bvseo-msg: The resource to the URL or file is currently unavailable.;

Questions & Answers

What is max mounting height above finish floor for the sensor LMDC-100 – U ? We intend to install LMDC-100 – U sensor to a pendant. The bottom of the mounting box is 12'-4" AFF. Is this mounting height acceptable?

Asked by: B254
The maximum mounting height for an LMDC-100 is 10 feet. It is recommended that you use an LMPC-100-5 sensor for ceiling heights from 10-40ft. https://www.legrand.us/lighting-controls-and-systems/occupancy-and-vacancy-sensors/ceiling-wall-mount-occupancy-sensors/dlm-pir-ceiling-mount-sensor-with-extended-height-lens/p/lmpc-100-5
Answered by: Tier 1 Tech Support
Date published: 2022-02-01

Lights won’t turn on or off automatically using this sensor . I am using compatible switch . 

Asked by: Sparky
There may be an issue with the programming. Please contact Wattstopper Technical Support @ 800-879-8585 for troubleshooting assistance.
Answered by: Tier 1 Tech Support
Date published: 2022-08-27

What is the pin out for the RJ45 connections? Does this use the same pinout as Cat5E network cables?

Asked by: JRPJR
568B is the recommended pin out for Cat5 cables being used with the DLM system.
Answered by: Tier 1 Tech Support
Date published: 2022-03-29

Is there an available specification requirements sheet for the LMDC-100 Dual Technology Ceiling Sensor comparable to the specifications sheet for the DW-100 Dual Technology Wall Switch Sensor document #DW0608?

Asked by: Russell
All of the spec info for the LMDC-100 Sensors would be included in the Cutsheet and Installation Instructions located at: https://www.legrand.us/lighting-controls-and-systems/occupancy-and-vacancy-sensors/ceilingwall-mount-occupancy-sensors/dlm-dual-tech-ceiling-mount-sensor/p/lmdc-100?text=LMDC-100
Answered by: Tier 1 Tech Support
Date published: 2022-02-06

We have 3 LMDC-100s daisy chained together and only the first one is operational. I don't see any documentation on this type of setup. Is this a valid configuration?

Asked by: Brian
Yes, the DLM system is an open topography system and it is perfectly fine to wire in that configuration. Please call Technical Support @ 800-879-8585 if you require troubleshooting assistance.
Answered by: Tier 1 Tech Support
Date published: 2021-08-03

Where can I find the guide on how to adjust the settings on the dclm 100?

Asked by: Anonymous
I have attached the DLM System Installation Guide. Pages 8-21 cover the installation and programming of the DLM sensors. I hope this helps.
Answered by: Tier 1 Tech Support
Date published: 2022-09-08

Can LDDc-100 be programmed to function as vacancy sensor?

Asked by: TXP

I would like to use the ccupancy sensors to track the sole-occupier movements throughout a 2-strorey maisonette. If this is possible, I would then like to control lighting, HVAC, audio and video based on the presence of the occupier.

Asked by: Anonymous
  • y_2023, m_3, d_30, h_21CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.35
  • cp_2, bvpage2n
  • co_hasquestionsanswers, tq_16
  • loc_en_US, sid_LMDC-100, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_legrand
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 18ms