Measure pH, ORP, EC or salinity with an Arduino or Raspberry Pi

μFire - Store Policies

Refunds and Returns

We have a no questions asked 30-day refund or return policy on unmodified items. Send an email to [email protected] to arrange it. We only ask that you ship the items back to us. If you choose to receive a refund, it will be in the same form as your payment.


Our website doesn’t store any of your information. Your credit card details are stored through our shopping cart. If you signup for our newsletter, we won’t share your information with anyone else.

International Shipping

All customs fees, taxes and duties are the sole responsibility of the customer. Customs authorities require that we state the value of your order directly on your package – the value is the retail cost. μFire cannot mark any package as a “Gift” in order to avoid customs and duties fees.

We recommend shipping via UPS International or DHL for the fastest, most reliable service, but will ship via USPS International as well.

If your package is refused or destroyed due to customs rules, μFire will not be able to refund your order or offer a free replacement.


Our mailing address is: 61190 Deronda Ave Whitewater, CA 92282