Nine Volt Battery Adaptor Module (Model 630, 630-8)

Nine Volt Battery Adaptor Module, model 630 and 630-8, is a device that allows a single switch to be used to control any device powered by a nine-volt transistor battery for individuals with a physical disability. The switch is plugged into a jack on the Adaptor Module. A special plug wired to the Adaptor Module connects between the battery contacts in the device and the battery itself. When the switch is activated the battery connection is completed and the device is turned on. When the switch is off, the battery connection is interrupted and the device is off.