This is a commercial version of "Butler In A Box", an electronic home controller system designed by professional magician Gus Searcy and computer programmer Franz Kavan. This unit sold for between $1500 and $3000 depending on the accessories needed to meet a customer’s requests. Butler In A Box required microphones for users’ voice inputs, and different controllers for thermostats, light circuits, alarm systems and telephone access. Aside from sales to luxury-home owners, Mastervoice also marketed the product to physically challenged people who might have difficulty operating traditional electrical switches and controls.