Useful with any control system for a Draper electrically operated projection screen, the Draper 121017 KS-1 Power Supply Key Switch mounts next to the operating switch and controls power to it. The Key Switch can interrupt the power to any control, however, it is mainly intended for use with the SS-1R Single Station Control, or MS-3R and MS-4R Multi-Station Controls, where the safety feature of key control is also required. The Key Switch is a 2-position operator (ON and OFF), and includes two 6" wire leads, both white, to interrupt the hot wire. The cover plate is stainless steel and the switch includes two keys.
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