Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14Schottky Barrier Rectifier Diode, DO-41Schottky Barrier Rectifier Diode, DO-41Operational amplifier, DIP-8Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling)Switch, triple pole double throw, illuminated paddle, red and green LEDs K switch SPST LED OFF-ON lamp D Single Pole Single Throw (SPST) switch, small symbol D 2x DIP Switch, Single Pole Single Throw (SPST) switch D MEC 5G single pole double throw, center OFF position K switch single-pole double-throw spdt ON-ON horizontal MEC 5G single pole double throw K switch dual-pole double-throw spdt ON-ON D Double Pole Single Throw (SPST) switch with LCD screen K switch normally-open pushbutton push-button D Push button switch OFF-(ON CMOS General Purpose Timer, 555 compatible, PDIP-8 | | J7 .