For technical support, spare parts information, or to obtain a return material Authorization (RMA), please contact TESI by emailing or calling +1.410.891.2218. Prior to contacting TESI, have the model and serial number of the system (typically​ located on a label attached to the system), recently recorded data, and a record of recent maintenance available.

To ensure spare parts for your system will be available when needed during maintenance, please request a maintenance spare parts kit that includes commonly needed items to maintain your system. ​​​​​