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DLM Dual Tech Ceiling Mount Sensor V4, White

LMDC-100 Wattstopper
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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
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  • 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
RoHS Conformant Yes This product meets the material restrictions of Article 4 of the RoHS Directive (2011/65/EU), including Commission Delegated Directive 2015/863.
DesignLights Consortium Qualified System Yes
Security   Yes This product is ioXt certified
Product Environmental Profile Yes
Technical Information
Sensor Type Occupancy


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Questions & Answers

Does the sensor provide data as to how often the area is occupied? If not, do any of your products provide occupancy data?

Asked by: Eric S
Hi Eric, This sensor does not have that feature. An advanced DLM system with BMS capabilities can provide more details regarding occupancy and power consumption. Please reach out to our tech. support team if further assistance is required with this request. Legrand Technical Support: Phone: 1 800-879-8585, Option 3 then Option 1 Mon - Fri: 7am - 7pm CST (excluding holidays)
Answered by: Tier 1 Tech Support
Date published: 2023-03-07

when scrolling through the functions, i do not see the overide function.the lights keep timing out, and i would like to overide this function.

Asked by: Mike R
Hello Mike, Please reach out to our Wattstopper division for further assistance with part number LMDC-100. Wattstopper Technical Support: Phone: 1800-879-8585, Option 1 Mon - Fri: 7am - 7pm CST (excluding holidays) Best Regards, P&S Technical Support
Answered by: Justin
Date published: 2022-10-28

Can the LMDC-100 occ sensor be wall mounted, stairwell application

Asked by: Gerard
If you mount a ceiling sensor to a wall, it will effect the way motion is detected and may not work properly.
Answered by: Legrand Technical Support
Date published: 2022-10-24

hi i ran cat6 cable is that going to affect the installation, or it need to be cat5

Asked by: elvirus
Good morning Any Cat5 or Cat6 cable will work with the DLM installation as long as the cable is a straight thru cable. Although you can use the TIA standard 568A, TIA standard 568B is what I recommend.
Answered by: Tier 1 Tech Support
Date published: 2022-09-15

Where is the .pdf instructions to program the V3 with LCD screen?

Asked by: jon
Good morning To be able to answer your question we will need what the device is you are refering to. It would be best to contact Wattstopper Tech Support at 1-800-879-8585 option#1 for us to gather more information to help help answer your question.
Answered by: Tier 1 Tech Support
Date published: 2023-09-30

I have a LMDC-100 showing E06 & E07 on the lcd display. It seems to over ride the two switches in the room. What are these codes and is there a master rest to get rid of them?

Asked by: William James
These are DLM error codes. E06: No load assigned to sensor, E07: No communication possible(Comm line is being grounded). There is a Cat5 termination issue, and a some programming needed once the Cat5 issue is resolved.
Answered by: Tier 1 Tech Support
Date published: 2022-10-26

Is the LMDC-100 designed to function in low-movement settings such as conference or meeting rooms where people are always seated? Does that affect the installation height? We want to avoid lights shutting off during meetings where there isn't movement.

Asked by: JB
The LMDC-100 is an occupancy sensor. It's main function is to trigger on the load when it detects motion and keep the load on as long as it detects motion. It also will to turn off the load when it doesn't detect a motion after the time delay expires. If someone feels that it may turn off the load because people are not moving it's recommend to set the time delay to 30 minutes which is the maximum. Outside of maximizing the time delay you can put the sensor into override mode which will not allow it to use the time delay, plus the two technologies like the PIR and Ultrasonic within the sensor will no longer function and the sensor will not respond to movement or lack of movement but you will have to use a switch to turn on and off the lights because the sensor is dormant.
Answered by: Tier 1 Tech Support
Date published: 2022-06-13

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
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