Built-in LED Dimmer ACM-250-LD

High-performance build-in LED dimmer to wirelessly control your lights

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Key features

  • The best solution for wirelessly dimming LED lights (up to 50 Watt)
  • Also supports incandescent and halogen lights (up to 250 Watt)
  • Choose between 2 distinct dimming modes for optimal LED dimming performance (leading/trailing edge)
  • Compact design: can be easily installed in a ceiling or junction box
  • Connect up to 2 existing wall switches, for example at the top and bottom of a stairwell
  • Existing wall switches remain operational


Height of main product (in mm) 45 mm
Width of main product (in mm) 40 mm
Depth of main product (in mm) 15.2 mm
Total weight 193 g
Weight of main unit 79 g
Dimming modulation leading-edge, trailing-edge
Possible to connect traditional wall socket no
Possible to connect traditional wall switch yes
Required electrical power wires 220V, Null
Intended installation build-in
Supports stairwell circuit yes
Number of traditional wall switches supported 2
Wireless range 40 m
Cables included No
Start Line Product type receiver
Code system Automatic
Wireless transmission power (dBM) 0 dBM
Wireless transmission power (mW) 0 mW
Standby power 1 W
Input frequency of main device 50 Hz
Input voltage of main device 230 V
Output voltage 230
Max power per supported lamp/device type 20-250W Resistive load 3-50W Dimmable ESL/LED
Total max output power (W) 250 Watt
Power conversion main component MOSFET
Number of power output channels 1
Power output yes
Power adapter
Power adapter included no
Compatible Product Lines Start Line
Controls lights on/off
Indicators Power
Dimming range 10 - 100 %
Max number of transmitters supported 32

Extra information

General Item number:
EAN code:
1   year
Product weight (net):
193 g
Package contents Build-in LED dimmer Manual
System requirements Trust Smart Home transmitter Dimmable LED/Incandescent/Halogen light* * A good quality dimmable light is advised for proper, noise-free operation




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Frequently Asked Questions

Solving problems

Where is your service center? Or where can I send my product to be repaired?

Unfortunately, we do not have service centers to repair products.
A defective product should be replaced by your point of purchase during the warranty period.

My product is faulty. What do I do?

We offer a 'return to retailer' warranty on our products. In case of a defect, you can return the product to your retailer with failure description, proof of purchase and all accessories. During the warranty period you will receive a replacement product from the retailer if available. For full warranty conditions you can consult: https://www.trust.com/support/warranty


Warranty conditions
  • Trust offers a warranty to the original purchaser from an authorized retailer.
  • Your Trust product is guaranteed under the terms and conditions of this warranty against manufacturing defects for a period of one (1) year* from the date of original purchase, if purchased from an official retailer.
    • *In EU, there is a statutory minimum warranty period of 2 years on every product we sell.
  • In case of defect, return the product to your retailer with failure description, valid proof of purchase and all accessories.
  • During the warranty period you will receive a replacement product from the retailer if available.
  • Warranty will be void in cases of opened products, physical damage, misuse, modification, repair by unauthorised persons, carelessness and using the product for other purpose than its intended use.
  • Exclusions of warranty:
    • Damage caused by accidents or disasters, such as fire, flood, earthquake, war, vandalism or theft.
    • Incompatibility with other hardware/software not defined as minimum system requirements.
    • Accessories such as batteries and fuses.
  • In no event shall the manufacturer be liable for any consequential or incidental damages, including any loss of business profits or any other commercial damages, arising out of the use of its product.


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Where to buy

Where to buy

We don't sell our products online ourselves. You can purchase our products via our retailers such as the large online retailers listed below per country. Furthermore you can find our products in many local shops.

Go to our online retailer shops overview