There are 2 ways. Fill in the Become Distributor form. Or send email to sales@yessstech.com.

Either way we will contact you within 24 hours. Please add the email into whitelist just in case it’s blocked by server.

For single-use products, YESSS ensures complete one time use within shelf life(2 years).

If you need assistance with any product, please submitting a contact form or email us. Support team will reply you within 24 hours.

If your single-use loggers haven’t started recording, please feel free to reset the parameters here.

A certificate of calibration is provided when your device ships. You can also request a copy of the certificate of calibration for any YESSS device by submitting a contact form or email us.

When submitting the request, please list the device serial number for which you need the certificate(s) of calibration.

Please fill in the Support Form. YESSS support team will reply you within 24 hours.