Expansion Board 16-Channel 3-Amp DPDT
XR163DPDT$290.00

XR Expansion Board
The XR163DPDT Expansion adds four 5-amp relays to a ProXR Board. Expansion boards connects to the ProXR Board using a supplied 6" ribbon cable plugged into the XR Expansion Port. This expansion board is compatible with any ProXR board.
Expansion Board 16-Channel 3-Amp DPDT
XR163DPDT$290.00
Expansion at a Glance
- 4 3-Amp Relays Installed
- Single Pole Double Throw (SPDT) Relay
- Highly reliable Under Almost any Conditions
- Temperature Rating -40° C to 85° C - Compatible Boards
- Any ProXR Board
- Any Taralist Board
- Will Not Operate Independently
- Not Compatible with ProXR Lite Boards - Onboard XR Expansion Ports
- Plugs Into ProXR Board or Other Expansion Boards
- Daisy Chain Expansion Boards Together
- Control up to 256 Total Relays
- 6" Ribbon Cable Included
Add Relays as Your Needs Grow

Will Not Operate Independently
This Expansion Board gets it's commands from the main ProXR or Taralist board and will not operate independently. This board MUST be plugged into a ProXR or Taralist board to operate and will not function on it's own.Mix & Match
Expansion boards do not need to be the same relay amperage as the main board or other expansion boards. Mix &anp; match expansion board to get the exact amperage for your switching needs.Power Requirements
This and all expansion boards require 12 VDC to operate. We offer a wall-wart type power supply at checkout if you need to plug this into a 110 wall outlet.DPDT Relays Installed


2-Million Cycles
ProXR series controllers are designed for long life, you should expect to get years of service from your controller and literally 2-million cycles from the relays on board. With a 5-year warranty and a money back guarantee you have nothing to loose! Place your order now, while everything is in front of you.Essential Power Requirements
Applying Good clean power to the board is essential for the operation of the board. Not only for the switching of the relays but the firmware that processes the commands. Without good steady clean power from a regulated power supply the board simply will not function correctly. All boards on the site require 12 VDC power. The PWR12 US power supply is a 120VAC to 12VDC 1.25A 60Hz regulated power supply and it plugs into the barrel connector on the board. The output connector is a 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female R/A barrel connector. We also carry an international power supply with interchangeable adapters for international customers. Learn MoreRoHS Compliant

5-Year Warranty/Money Back Guarantee
ProXR Lite series controllers are guaranteed against manufacturing and functionality defects for a full 5 years! Not to mention a 30-day money back guarantee! If for any reason you are not happy with a relay purchased from Relay Pros, simply return it within 30 days and we will give you your money back! Controllers that are damaged by our customers will not of course be warranted under any circumstances.Shipping
The boards sold are brand new units shipped from our office conveniently located in Missouri. These boards are completely tested before they are released for shipping With so many boards on our site it is impossible to stock boards, please allow two to three days production time for your order to ship. If you have any questions please feel free to call our office at 800-960-4287 or e-mail us at sales@relaypros.com.Relay Expansion Videos
Power Supply Available

Reliable Switching
The PWR12 is regulated power supply providing clean power necessary for the performance of these boards. The PWR12 US power supply is a 120VAC to 12VDC 1.25A 60Hz regulated power supply and it plugs into the barrel connector on the board. The output connector is a 2.1mm I.D. x 5.5mm O.D. x 9.5mm R/A barrel connector.
Induction Suppression
