Service & Support


If you have any questions, please read the FAQs before contacting the support team. If you cannot find the answer to your question in the FAQs, please fill out the form. Please formulate your question in German or in English and we shall get in contact with you immediately. For questions concerning problems with the TEASI tool, we require the device ID. This is displayed by the update tool, if applicable. By exactly describing your problem, we can help us to respond faster to your request.

Service email address

You can also submit your questions to us via email:

warranty terms

Customer service/contact

Should your device have a defect, or if you are not satisfied with it, please send the device to us using the address below, taking into account the following points.

  1. Send us your device in the original box.
  2. Include a letter describing the error and your full address, as well as
  3. a copy of proof of purchase.
  4. Stamp the package that you send to us (sufficient postage).

Address of the Service Center:

First Service
Kleine Düwelstr. 21
DE-30171 Hannover



Please keep proof of purchase for this device during the duration of the warranty. It must be included in the event of a  claim.

You (the end-consumer) are entitled to a 36 month warranty starting from the date of purchase. The item was manufactured using the latest production process and unterwent strict quality controls. Should defects occur during the period of warranty, please contact the manufacturer and not the distributor!

The warranty does not apply to damages caused by improper use or external influences (water, shock, sun, breakage).

FAQ - Frequently Asked Questions

Here you will find frequently asked questions about Teasi. Please read these questions, before contacting our support team.



Here you will find instructions for use in PDF format available for download in several languages and an installation guide so that you can use your Teasi bike attachments quickly and without difficulty.



Read all changes over the last versions in the change log.

see Change Log