Ordering Information 

Masterclock accepts orders by phone, fax or email. We would be pleased to prepare a quotation based on your specific requirements. Click here to request a quote.


Accepted forms of payment include:

  • Company check, money order or cashiers check

  • Electronic Funds Transfer (EFT)

  • Bank Wire Transfer

  • Credit Card (Visa, Mastercard, American Express, Discover) *A 3% surcharge will be added for all orders over $5000 USD

  • All payments must be made in USD.

Net 30 payment terms are available to recognized governments and their agencies as well as qualified organizations. Click here to download a credit application.

Purchase Orders

All purchase orders are subject to acceptance by Masterclock, Inc. Please include each product by model or part number, quantity and any options in your purchase order. Mail, fax or email signed corporate or institutional purchase orders to:

Masterclock, Inc. - Attn: Sales
2484 West Clay Street
Saint Charles, MO 63301-2458
+1 (636) 724-3776 (Fax)


Shipping costs can be charged to your freight account, prepaid with your order, or added to your purchase order invoice. Carriers include FedEx, UPS, DHL, and others.

Duties and Taxes    

All duties & taxes, unless otherwise prearranged and agreed to by both customer and Masterclock, are the responsibility of the customer.

Returns and Warranty

We offer a 30-day satisfaction guarantee on all of our products. If the product does not meet your requirements, return it within 30 days from the invoice date (undamaged, in the original packing with all accessories intact & freight prepaid) with your receipt.

All Masterclock products are designed and manufactured in the USA and carry a 5 year limited parts and labor warranty. Masterclock will also pay for standard/ground transportation if a product is returned for repairs within the first year. 

Click here to download Masterclock's terms and conditions.