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BackAvailable - mini toggle pushbuttons: ample space above pcb micro toggle: probably too short without extra spacers, use mini toggle switch ON-ON Push button switch, generic, two pins | | | 1 | B20k | Potentiometer | | R25, R27, R29 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92"/>