IN-STOCK and Available NOW from Weld Systems Integrators

SIMPLICITY:  Sets a new standard in simple, cost effective welding controls providing absolute timing and heat setting accuracy.

  • replaces old controls on all resistance welders
  • ideal for installation on new welders
  • available as a complete unit or retrofit package

SIMPLICITY: In installation

Designed for easy installation without the need for special electronic knowledge or fancy equipment. Each system is shipped complete in a single, ready-to-mount control cabinet. Easy-to-follow, step-by-step directions for installation are included. A typical installation and basic 7 wire hookup should take about an hour and a half.

UNITROL Simplicity Resistance Welding Controls | Weld Systems Integrators

Important Note: Standard automatic power factor and digital electronics eliminate the need for any adjustments or calibrations. In fact, the SIMPLICITY has nothing to adjust–ever.

SIMPLICITY: In flexibility

To meet your needs, SIMPLICITY includes as standard provisions for 2 stage initiation, single stage initiation, pressure switch interlock, limit switch interlock, external no weld, emergency stop, transformer over temperature, and contactor over temperature.

SIMPLICITY: In maintenance

In the unlikely event of service, replacement of the P.C. board component should restore operation immediately. Replacement boards are always in stock for immediate shipment. In by noon–out by 4PM.

And you’ll like this– Unitrol’s exclusive 5 Year Limited Warranty protects your investment and assures you of years of continuous production.

SIMPLICITY: In pricing

A pleasant surprise– with all the above features and benefits, Unitrol’s SIMPLICITY prices start at around $2000.00

SIMPLICITY: In operation

There is no special training needed to operate SIMPLICITY. Settings are instantly made on direct reading push wheel switches. Dual level initiation gives your operator complete control where it counts most–at the welding tips. Indicator lights shine to verify power, solenoid operation, and weld in progress. And our quartz accuracy eliminates the need for continuous resetting.


You will find al electronic components, including the power transformer, are conveniently located on one 7” x 8” printed circuit board. Your hook up wires are easily connected to terminals in the same P.C. board eliminating the need for wiring harnesses and interconnecting cables.

And if you require the addition of a control option, it can be installed without the need for additional electronics or circuit boards.

SIMPLICITY: In performance

Your SIMPLICITY control will have the capability to do spot and projection welding on such materials as cold rolled, galvanized, stainless and aluminum.

In addition, an automatic repeat function, included as standard, allows for quality continuous high-speed welding.


A complete NEMA interlocking relay system, extra cost on some other brands, is included as standard along with photo optical isolation on all inputs and outputs. The SIMPLICITY also protects your welding transformer with an exclusive computer generated inrush protection system (replaces older “87½˚ first half cycle firing”).

Contact Weld Systems Integrators

Weld Systems Integrators (WSI) is your complete source for standard and custom resistance welders, consumables, spare and replacement parts and value added services. We offer WORLDWIDE shipping from our Warrensville Heights, OH location.

CONTACT Weld Systems Integrators, or REQUEST A QUOTE on standard IN-STOCK inventory or fully custom welding equipment. To speak with a WSI team member, please give us a call at 844-WSI-WELD or +1-216-475-5629.

Welding Controls  |  UNITROL from Weld Systems Integrators

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