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319 Contact Key, Single, Economy
Perfect for experiments which require momentary current. The con-tact key can be used to open or close an electrical circuit. They key is mounted on a 2" x 4-1/2" black acrylic base, with two binding posts. They key is made of plated metal with contacts and insulated button which is pressed to close the circuit momentarily. Economy; 0.5 lb.
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