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A spa circuit board is the "brains" behind your spa, controlling jet flow, filtration systems, water temperature, as well as the unit's high-limit sensors. Master Spa Parts offers a number of replacement circuit boards.

Enjoy remote control access to your spa entertainment system with the EL Series IR Receiver.

The CoverMate I with Master Bracket is designed for 2014 and older Master Spas swim spas. The “Master Bracket” is designed to screw into the wood frame of the swim spa behind the corner. This gives your cover lifter a way more secure attachment to your swim spa!

Durable 2 inch straight VGB-standard suction adapter is designed to work with our standard 2 inch suction covers for Master Spa hot tubs. Our Master Spa suction covers are genuine OEM Master Spa replacement parts, ensuring you’ll receive a top quality product for your spa.

General use number 8 stainless steel screws to fix and fasten surfaces securely are available to you from Master Spa Parts.

Spas and hot tubs that operate with a failing circuit board put the whole works (and your safety) at risk. We can help bring back the enjoyment of your spa — order this MS501S circuit board replacement and receive free shipping to all addresses in the "Lower 48".

The Waterfall Diverter Valve, 1/2" 3-WAY GREY by Master Spas is a replacement part for your home spa’s original waterfall diverter valve. The water diverter valves in your spa allow you to control when and where water flows. The Waterfall Diverter Valve, 1/2" 3-WAY GREY is durable, affordable and easy to install at home.

The Pump Pad is your key to a quieter running spa/hot tub. Mount your pump on the pad to prevent transmission of the noise and vibration from the motor in your pump. Works well with pumps on most models.

Waterproof Stereo Front Cover keeps your spa stereo equipment nice and dry. You spent some good money on this system. Don’t let it get damaged by the harsh conditions that come with spa use.

Chlorinate your spa with Spa Ease Chlorine Granular, which uses no scale forming minerals and dissolves instantly in your hot tub!

If you've pinpointed your spa's issue to the circuit board, replacing your board can bring back many essential functions and safety features, such as your lights, heat sensors, high-limit sensors, and jet pumps.

At Master Spa Parts, we're proud to carry a diverse selection of circuit boards, including this Master Spas® circuit board, sold under the product name of "Master Spas® Circuit Board MAS400 PC Board (V/N 52185)" in our online store.

At Master Spa Parts, we carry the Master Spas® Legend® Series Topside Controller Decal to replace controller overlays from the late 1990s and early 2000s. This Standard Series Overlay features beautiful graphics and will stand up to years of constant heat and humidity.