Customer Service


By Phone:
     USA: 1-(617) 517-4000
     Australia: +61-2-801-523-35
     UK/Europe: +44-20-3129-6623
     France: +33-1-8288-3854
     Spain: +34-911-829-871
     Denmark: +45-699-187-23
     Netherlands: +31-20-808-3086

By E-Mail:

By Mail:
     USA SIMs
     P.O. Box 2232
     Worcester, MA 01613

For wholesale pricing, large volume purchases, and drop ship services, please email us at

Manufacturer's Warranty:
In the event that a product needs to be returned to a manufacturer for service or warranty work, the customer is responsible for all shipping arrangements. Please contact us for manufacturer policies regarding the procedure and the cost of shipping returns.