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Digital Thermometer PDT550 - Bubbles Supply

Digital Thermometer PDT550

Part #: PDT550

$34.59
In stock — ships today
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About this hardware/other

The UEI Digital Thermometer PDT550 is a precision pocket thermometer designed for accurate temperature monitoring in spa and hot tub systems. This professional-grade digital sensor provides reliable temperature readings essential for troubleshooting heating issues, ice mode problems, and overheat conditions in various spa brands and models.

Built to OEM specifications, this compact digital thermometer delivers the exact performance your spa requires for optimal operation. At Bubbles Supply, we guarantee an exact fit for your system, backed by our comprehensive 1-year warranty and same-day shipping on in-stock items. The PDT550's portable design makes it an invaluable diagnostic tool for spa technicians and DIY enthusiasts alike. Ensure proper calibration and compatibility with your spa's existing sensor requirements before installation.

Exact part number

PDT550

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • handheld spa thermometer
  • pocket digital thermometer
  • spa diagnostic thermometer
  • UEI PDT550

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Inaccurate water temperature readings
  • Spa displaying OH (overheat) fault code
  • Spa stuck in ICE or freeze protection mode
  • Heater running but water not reaching set temperature
  • Suspected sensor drift causing erratic temp behavior
  • Verifying thermostat or sensor calibration accuracy

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm this is a diagnostic/verification tool — it does not replace an in-spa sensor or thermistor
  • Check that your existing spa sensor or thermostat is the root cause before replacing components
  • Use this thermometer to cross-reference your spa's displayed temperature against actual water temp
  • Verify the temperature range you need to test falls within the PDT550's rated measurement range
  • This is a handheld pocket thermometer — not a fixed installation part

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Easy — DIY-friendlyTypically No installation required — handheld diagnostic tool

What's in the box

  • UEI PDT550 digital thermometer
  • Probe/sensor tip
  • Battery (check product packaging for included battery details)

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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