View cart “4 Channel 5V optocoupler Relay Module” has been added to your cart. 555 timer 4 pack $3.00 50 in stock 555 timer 4 pack quantity Add to cart Categories: Digital Logic IC's, Electronic Parts Description Description The classic 555 timer. Pack of four. Comes in an 8 pin DIP IC. Brands may vary. Share on TwitterShare on FacebookShare on WhatsAppShare on LinkedInShare on Pinterest Related products CD4082 Dual 4 Input AND Gate $1.50 Add to cart CD4060 14-Stage Ripple-Carry Binary Counter with Oscilator $2.00 Add to cart 74HC08 Quad 2 input AND Gate $1.50 Add to cart 4 Channel 5V optocoupler Relay Module $4.00 Add to cart