CD4047 IC Monostable/Astable Multivibrator HEF4047
CD4047B consists of a gatable astable multivibrator with logic techniques incorporated to permit positive or negative edge-triggered monostable multivibrator action with retriggering and external counting options.
Ceramic Capacitor 220000 pico Farad 220nF = 0.22uf (224)
voltmeter and current display
PBS-33B WATERPROOF PUSHBUTON SWITCH 12MM - Red
pc 817 Opto-Coupler
timer 555 IC 









