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BackEnter 4-bit rotary coded switch, through-hole, https://www.nidec-copal-electronics.com/e/catalog/switch/sh-7000.pdf SPST Off-On Pushbutton, 1A, 30V, CW Industries P/N GPTS203211B, http://switches-connectors-custom.cwind.com/Asset/GPTS203211BR2.pdf SPST button switch OFF-(ON CMOS General Purpose Timer, 555 compatible, PDIP-8 | | U2 | 1 | Synth_power_2x5 | Pin socket, 2.54 mm, 1x7 | | D1, D2, D3, D4, D5, D8, D9, D10 100V 0.15A standard switching diode, DO-35