Interfaces
We have a number of interfaces to help you make your controller do exactly the job you want
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Controller Test Board
We've updated our controller test board to make it cheaper and easier to use. It works by temporarily taking the place of the normal control wiring, and helps to identify and isolate problems, or do pre-installation testing.£6.00 inc VAT More Info -
Double Heading / RC Board
This board allows a single handset or radio control set to drive two of our controllers for double heading [or MU] operation.£87.60 inc VAT More Info -
Digital dual channel interface
A dual channel interface board that lets a single dual axis joystick control two independent motor controllers for skid steer vehicles.£60.00 inc VAT More Info -
Porter 3 Speed
A 3 position top speed limiter for the Porter controller. Ideal for Greenpower cars to balance the power available to all 3 drivers. Also allows advanced race strategies to be used.£36.00 inc VAT More Info -
Sound Card Convertor
An interface card that replicates the servo signal from a standard radio control receiver, and allows a 4QD controller to drive a sound card that requires a PWM control input, such as the ESS-dual from Sense Innovations.£42.60 inc VAT More Info -
Horn Relay Board
These relay boards are designed to work with our RBT hand throttles. The 3 relay versions can operate twin horns and a single lighting circuit, the 4 relay versions can handle twin lighting circuits. Both versions are available for 12V or 24V systems.£28.20 – £33.00Price range: £28.20 through £33.00 inc VAT More Info -
Dual-Channel Radio Control Interface
A general purpose dual-channel radio-control interface providing proportional motor speed control from a standard radio control system.£64.80 inc VAT More Info -
Hall throttle adaptor
This adaptor allows 5V hall effect throttles to work with our DNO controllers.£11.10 inc VAT More Info -
Ditch Light Flasher
A flasher unit that provides a timed flashing function for model loco ditch lights.£37.80 inc VAT More Info -
Joystick Interface Board
A joystick (wig-wag) interface board for single-axis control. The joystick board transforms the speed control to give a centre-zero operation: Move the lever forward to go forward, moving the lever back selects reverse.£18.24 – £25.20Price range: £18.24 through £25.20 inc VAT More Info

![Double heading [or MU] board.](https://www.4qd.co.uk/wp-content/uploads/DHB-202-2-600x450.jpg)







