4-Channel Programmable Time Relay Delay Switch Module 99-Step Timed Solenoid Valve Linkage Control Optocoupler Isolation PTR4-SP Controller with LCD

KNACRO 4-Channel Programmable Time Relay Delay Switch Module 99-Step Timed Solenoid Valve Linkage Control Optocoupler Isolation PTR4-SP Controller with LCD

ALLECIN SN74HC595N 8-Bit Shift Registers with 3-State Output Registers DIP-16 SN74HC595 74HC595 Shift Register (Pack of 30pcs)

ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects