🚀 New launch promo — 10% off orders over $300. Use code LAUNCH10
Bubbles Supply
Not sure which part you need? Upload a photo and we'll find it. →
UEI Hot Tub Thermometer DM525 - Bubbles Supply

UEI Hot Tub Thermometer DM525

Part #: DM525

$873.88
In stock — ships today
Qty
🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
Add to B2B order list

Not sure this fits?

Send us a photo of your old part — we'll confirm the right replacement before you order.

Upload a Photo
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this hardware/other

The UEI Hot Tub Thermometer DM525 is a professional-grade True RMS wireless multimeter designed for spa and hot tub electrical diagnostics. This 1000V-rated digital meter with power factor measurement capability helps technicians accurately troubleshoot heating, circulation, and control system issues in residential and commercial spa installations.

Featuring wireless connectivity and True RMS measurement technology, this UEI multimeter delivers precise readings for voltage, current, and power factor analysis. At Bubbles Supply, we guarantee this sensor will be the exact fit for your diagnostic needs, with same-day shipping and our comprehensive 1-year warranty backing every purchase. The DM525's 1000V rating makes it suitable for both 120V and 240V spa electrical systems. Remember to follow proper electrical safety procedures and turn off power at the breaker before performing any electrical measurements on your spa system.

Exact part number

DM525

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • DM525 digital multimeter
  • UEI DM525
  • UEI hot tub meter

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:

  • Unable to confirm supply voltage at spa pack
  • Suspected heating element failure with no verified readings
  • Control board faults with unknown electrical cause
  • Troubleshooting HH, ICE, or OH error codes requiring temperature or voltage verification

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

Before you buy — quick checklist

  • Confirm you need a diagnostic multimeter — this is a technician tool, not a replacement sensor
  • Verify the DM525 model number directly on the UEI product or packaging before ordering
  • Confirm the meter's measurement ranges cover your spa system voltage (120V or 240V)
  • Review UEI's published specifications to ensure the DM525 meets your diagnostic requirements

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

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.

🔒 Secure checkout · SSL encrypted·🇺🇸🇨🇦 Serving the US and Canada·↩️ 30-day hassle-free returns·📦 Same-day fulfillment