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The prototypes have been built: a single probe version and a double probe model. System consists of a small box with circuitry and speaker and a photosensor probe or probes at the end of a cable. Each probe also has a suction cup to hold it in place over an indicator lamp. The probe is silent when the sensed indicator lamp is on. When no light is sensed the speaker emits a constant tone. The two probe model emits two distinctive tones and has a switch to select a constant tone or a beeping tone output. Hand on and off switch and volume control; tone switch on the two probe models only. Power: internal battery. Single probe box measures one inch by two inches by three inches; double probe box measures two inches by three inches by 5 inches.
Price: Contact manufacturer.
This product record was updated on April 24, 2003.
This product is available from:
Smith Kettlewell Eye Research Institute, Rehabilitation Engineering Center2318 Fillmore Street
San Francisco, California 94115
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