ElectroDynamics Inc
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      Buffer-Amplifier Interface

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Ultra Switch II

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Ultra Switch II

Heavy-Duty DSC-compatible
Ultra Switch II

  • Heavy-Duty 22AWG cables
  • GOLD connectors
  • Heavy-Duty double-pole, double throw switch with 4 redundant contacts
  • Built-in charge jack
  • DSC-compatible
  • Available with JR (also fits Hitec, Airtronics-Z), Futaba-J connectors.
  • Overall dimensions: 1-3/8"L x 9/16"W x 3/4"H
  • Weight: 0.8oz

Product Review
(Courtesy, Chattanooga Radio Control Club www.crccflyers.org)
PDF format

Why the Ultra Switch II instead of the "Industry-Standard brand"?

  • Exclusive switch guard which prevents accidental operation of the switch.
  • Properly radiused exit holes for the wires to prevent chafing and fatigue
  • Internal insulation between the wires and the switch PC board to prevent wear-thru shorts.
  • Built-in charging jack door to keep out dust and dirt.
  • Exclusive nut plate makes installation a snap - no need to "fish" for fiddly metal nuts, screws cannot back out from vibration.  Use the nut plate as an E-Z template to make the cutout and mounting holes.
  • MUCH more cost-effective, better value!


Don't be fooled!
We have recently become aware of "look-alikes" popping up on the market.

Compare one of "THEIRS" to "OURS"!

Why doesn't  the Ultra Switch II have LEDs?

We chose not to integrate LEDs into the Ultra Switch in order to use the largest possible, Heavy-Duty switch "under the hood", for:
  • Maximum current-carrying capacity

  • Lowest switch resistance

  • Highest reliability. 


In order to accommodate LEDs, a smaller, less robust, less reliable switch would have to be used.

We believe that reliability and performance way out-ranks convenience and appearance.

We strive to bring the best products to the RCer!

How many Amps can the
Ultra Switch II handle?

The Ultra Switch II is internally capable of 10A.  

RC connectors (in the rest of your system, including the battery) are rated at 3A max.  ElectroDynamics' connectors and 22 AWG cables are rated 4A max.   But, these limit the max. amps the whole switch-cable-and-connectors can handle to 3A or 4A with our cables and connectors.

Be aware that there are many exaggerated claims of higher amps in the RC market, but as long as they use RC connectors, since the pins and sockets are rated at 3A max., regardless of the gauge of the wires or type of internal switch, the TRUE max amps of any switch that uses RC connectors is 3A max.

Ultra Switch II HD -- $28.00

NEED more Amps?

The Ultra Switch II HD handles up to
the FULL 10A

  • 18 AWG wires
  • Deans Ultra high-current connectors.

Requires batteries with Deans connector, and a Deans Ultra-to-RC system adapter.

Ultra Switch II HD-R2 -- $29.95

Ultra Switch II HD -- $28.00

Prefer to plug directly into your Rx without adapters?

The Ultra Switch II HD is also available with Dual Rx connectors.
Plug into the Battery port and any unused port on your Rx.

  • 18 AWG / Deans Ultra  Battery cable/connector
  • Dual 22 AWG Rx cables
  • Up to 8A continuous.

Some Customer Comments:

Last week I received four Ultra Switches and must say that they ARE of the highest Quality. Thank you.
    Walt Swanson

I would like to thank... Electro Dynamics for making the safest switch in the industry.
    Tom Ashley

I have purchased several Ultra Switches from you ...and usually buy them in two's and three's.  The main selling point for me is not having to deal with small washers and nuts like [your competitors'] switches.
    Brian Emmons

2017 ElectroDynamics, Inc
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Orders: 1-800-337-1638; Info: (734) 422-5420; Fax: (734) 422-5338
31091 Schoolcraft Road; GAZ Commercial Center; Livonia, MI 48150