Credit Box 500KThe Dataman Credit Box 500K is a credit box containing 500,000 credits for programming special ISP devices. The Credit box is valid for use with up to 10 consecutive software versions. Once the Credit box is activated at the time of first use, it can be used by the current and also by the next 9 consecutive versions of the control software. There is no time limitation on the usage. Please see associated Downloads for further information.