The future of speed control is here

Mtroniks MRLA Radio control adaptor

  • £104.99
  • Easy push button set up
  • Seamless radio control
  • No batteries needed

Radio control adaptor system for ride on locomotives. Full description

Product out of stock
  • Description
  • Delivery and Returns

The MRLA has been designed to allow you to control your locomotive from a radio control system. Allowing you to stand at the side of the track and watch your locomotive travel round the track layout from one position.

The MRLA has one multi-way cable which connects to the Mtroniks ACI/DCI main power unit. This carries communication information between the power unit and the MRLA, also this cable supplies power from the main ADC/DCI power unit to the MRLA which is then passed on to the radio receiver. This power level is at 5V DC, suitable for all such pieces of radio equipment. It is important that this power source is not overloaded (e.g. by connecting servo devices to the radio receiver), this could damage the main ADC/DCI power unit.

It has four cables which connect to a radio receiver. The correct connection and polarity of Signal, Positive and Negative are essential; please refer to your radio receiver’s manual. Each of these cables is labelled, indicating its function: THR=throttle/brake control channel, DIR=direction control channel, LAT=latching auxiliary functions channel, MOM=momentary action auxiliary functions channel. Each receiver channel has a matching transmitter control channel. The user should choose transmitter channels for operation that he feels with comfortable with and connect the MRLA’s cabling to the appropriate receiver channels. It is essential that the user feels comfortable with, and has a good knowledge of, the control channels.

It has four LED indicators giving visibility of the MRLA’s main functions: Operation LED (doubling as Signal Tester LED), Battery Condition LED, Alert LED.


Technical Specification

Product Type Digital
Set up Push button
Waterproof Yes
Dimensions L105.0mm x W71.0mm x H32.0mm
Weight 160.0g
Delivery & Returns


If the item is in stock we aim to despatch all orders within two working days (Monday to Friday). If any item is not in stock, please allow up to 14 days for delivery. For special order items, please allow 21 days delivery.

All goods sent within the UK are sent by Royal Mail or UPS and we aim for delivery within 3 working days. Overseas delivery may take a little longer and may be subject to delay in customs. Deliveries may be subject to import duties and taxes and the burden lies with the purchases to satisfy charges subsequently incurred.

Returns & Exchange Policy

At Mtroniks we want you to be totally happy with everything you purchase from us. If you have a problem it is very helpful to us if you Indicate what the problem is and whether you require us to take a look at it for you. We cannot refund to you if you do not have your purchase details!

If any of your items are faulty please let us know immediately on 01943 461482 or by emailing to and return them straight to us at the address below and we will exchange it for you as quickly as possible.

Please send your returns to:
Mtroniks Ltd.
41A Ilkley Road
West Yorkshire
LS21 3LP


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