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W-DIM4 Four-Channel Wireless Dimmer

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Product Information

The W-DIM4 is a high-voltage, 42A four-channel W-DMX dimmer for LEDs, lamps, and motors in set pieces, props, costumes, and more that operates on the W-DMX control platform.

The RC4 Series 3 W-DIM4 is a high-power 4-channel DC dimmer for props, set-pieces, turntables, and more that operates on the W-DMX platform.  A genuine Wireless Solution W-DMX radio transceiver is built-in for compatibility with numerous wireless DMX systems from a range of manufacturers. This flexible unit combines the best RC4 Wireless features with W-DMX, like super smooth LED dimming, high-powered halogen dimming, servo-motor control and more.

The most powerful wireless dimmer in the W-DIM class, the RC4 W-DIM4 provides four dimmers with a total current capacity of 42A — that’s 500W at 12V, 1000W at 24V.  The device works from 6VDC all the way up to 35VDC, and is perfect for use with the 30V battery belts common in the film industry.  Like all RC4 dimmers, the RC4 W-DIM4 features a variety of dimming curves:  Non-Dim, Non-Dim Inverted, Linear, Linear Inverted, Inverse-Square-Law, Inverse-Square-Law inverted, servo motor pulse clockwise and servo motor pulse counter-clockwise.

The RC4 W-DIM4 includes all of the RC4 Harmonized Design features found in our most popular RC4Magic line of products:

The warmth of incandescent lighting has long been favored by lighting designers, and for good reason; natural filament persistence ensures smooth fades even when control resolution is relatively coarse.  The W-DIM4 easily drives 500W of crisp 12V halogen lighting, and, thanks, to RC4 Digital Persistence™,  brings unparalleled smoothness to LED dimming, with a range of eight persistence periods emulating a variety of halogen lamp sizes.

All RDM features are available using a wired DMX connection.  Wireless RDM is available as an option, requiring the installation of an RDM-capable W-DMX card and an RDM-capable W-DMX transmitter.


Learn how to update the firmware on the W-DIM4 at the RC4 Knowledge Base


Anderson Powerpole connectors are provided for connection of the power supply (+/-DC IN red/black) and load devices (+/-DimA yellow/grey, +/-DimB yellow/grey, +/-DimC yellow/grey, +/-DimD yellow/grey). The supply powers both the internal electronics and the connected loads. Dimmers switch on the negative side of the circuit, ideal for common-anode (common positive) LED tape. Dimmer output voltage is precisely the DC power input voltage with no appreciable losses within the 42A total power handling limit of the device.  When operating at or near the maximum power capacity, Anderson 45A pins must be used at the power input, all wiring must be appropriately sized and in compliance with applicable electrical codes, and external fuses or circuit breakers should be used at the power source and in each individual dimmer circuit.

The DMX mini-plug port can be used with a range of RC4 DMX cables, including 3-pin and 5-pin male and female XLR adapters.  The most common adapter is the RC4DMX5FA with 5-pin female XLR connector.


RC4Magic Series 3 W-DIM4 Specifications

Dimensions:  4.40″ x 2.44″ x 1.22″ (112mm x 62mm x 31mm)

Weight: 4.70oz

Power Input: 6VDC – 35VDC, 0.4W idle draw, ~87% regulation efficiency, screw terminal connections

Dimmer Outputs: 4 low-voltage DC dimmers, Anderson Powerpole connections, 16-bit resolution PWM (16,384 steps)

Output Power, per Dimmer: 40A non-continuous, 15A continuous

Maximum Total Power Handling: 42A (limited by rating of Anderson power input connectors)

Multiple PWM frequencies: 77Hz (high power), 615Hz (flicker free), 5kHz (artifact free for video), 20kHz (noise free for audio)*

Sensors: Input voltage, internal temperature, individual dimmer current draw, total current draw (sum of 4 dimmers)*

DMX Input/Output: RC4 3.5mm mini, USITT DMX512/1990 data, non-standard port, connector adaptors available. Wired RDM E1.20 and E1.37 (dimmer configuration) support*

Wireless DMX Protocol: Wireless Solution W-DMX G4

RF Antenna: RP-SMA external, omnidirectional.  Alternate antennas can be used for increased sensitivity and directionality.

Note: All RDM features are available using a wired DMX connection.  Wireless RDM is available as an option, requiring installation of an RDM-capable W-DMX card and an RDM-capable W-DMX transmitter.


All prices and specifications are subject to change without notice.

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