Contact OTSI
Please contact us with any questions!
By E-Mail
If you have questions about OTSI or our products or services, please send e-mail to CustomerService@otsi.com.
By Phone or Fax
Because our team is busy working on new products, we do not provide live telephone support.
Our electronic voice/fax number is (425) 671-0640. Voicemails and faxes on this number are forwarded to our customer service team in e-mail.
If you prefer to send a voicemail rather than an e-mail, you can leave a message on this number 24 hours a day. We will return all non-solicitation calls within two business days.
Please fax purchase orders and return requests to us for fastest processing.
Note: Some older fax machines have difficulty communicating with the electronic fax number. If you experience difficulty sending a fax, please call or e-mail.
By Mail
Please direct orders, invoices, and payments to:
P.O. Box 951
Bellevue, WA 98009-0951
USA
For Deliveries
Parcel service and freight deliveries are accepted between 8:00 A.M. and 4:30 P.M. PST at the following address:
602 Bellevue Way SE
Bellevue, WA 98004
USA
For Returns
Send returns with a copy of the original invoice and the Return Authorization number to:
OTSI Returns
1150 Peace Portal Drive
Blaine, WA 98230
USA