On-Off Power Button / Pushbutton Toggle Switch : ID 1683 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Push Button, ON/OFF switch, with Screw holes for surface mounting - ScienceKitStore.com
On Off Electrical Control Box Push Button Stations Xdl35-b213 - Buy On Off Electrical Control Box, plastic elevator box inspection box, elevator button switch Product on Xindali
Single Phase Plastic Pump On Off Push Button Switch, Packaging Type: Box