Made in USA Flag All board products Proudly made in USA!

Manufacturer of computer controlled relay, I/O and custom boards for commercial and industrial applications.

Please note supply chain shortage update 06-06-2022:   

Due to the supply chain shortages we have been having a difficult time obtaining parts to produce our products.  Some of our parts have been on order for 8-9 months and have yet to receive an estimate on when we expect delivery.  Some parts are being received for certain products and we will do our best to fulfill what we can.
Also note production delays: some of our facility (offices and plant) has been moving to a new location and production will take longer as portions of the plant are not in operation at all times – we apologize for the delays.

In addition we have been experiencing problems with our email system and many emails were never received on the following accounts our and, this has been happening for some time and we were unaware since it is happening sporadically. 

We have created two new accounts to use until we can determine the problems we are having with our system and please use these emails to contact us.

Other email address have been the same problems and we will work to correct these too.


Mounting Hardware Stackable

Please note: These hardware kits are packaged by us, not produced - even though they are listed as a 2-3 day production under availability, these are of domestic or foreign origin and typically a stock item or 1 day assembly.

Typically a 2-3 Day Production <10pcs
Our quantity discounts:
Quantity 5+ 25+
Price $6.41 $6.08
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Hardware kit to stack a second relay or I/O board to another board that was mounted with the single board mounting kit. The first board must not have the on-board power supply (transformer), if the first board has the on-board power supply (transformer) use hardware kit HDW-K03 instead

Typically used for mounting inside of an enclosure with a removable metal plate.   Additional boards may be stacked with another one of these kits.


Requires HDW-K01 for mounting the first board, only one of these kits are needed for stacking multiple boards.

Kit Includes

  • 4pcs - Aluminum hex spacer M-F 6-32 @1.00" long

RoHs compliant

Hardware Instruction Manual (HDW-K02.pdf, 58 Kb) [Download]

Compatible Accessories & Components