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AC-DC Switching Regulated Power Supply 9VDC @ 2000mA; 2.1 x 5.5mm NEGATIVE center polarity; Part # SW-92NK | AC-DC PowerShack
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2" Stroke 12V Micro Linear Actuator with Momentary Switch, 188N/42lb Mini Small Electric Motion Actuators Waterproof Speed 5mm/s w/Mounting Brackets, Polarity Reverse Switch for Robot Window Opener: Amazon.com: Industrial & Scientific
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