24V 8 Channel Relay Module with Optocoupler 3/4 inch These are Carbon Film Resistor

These are Carbon Film Resistor with a value of 180 ohm 1/8W and tolerance of ±5%

Advanced Security Features

JWCO 470µF 50V Electrolytic Capacitor made with high purity Etched and Formed Aluminium foil with aluminium oxide dielectric barrier as anode foil and an aluminium cathode foil are concentrically wound with a layer of condenser grade paper in between and after impregnation with electrolyte

Glass passivated chip

This awesome programmer is extremely user-friendly

24V 8 Channel Relay Module with Optocoupler 3/4 inch These are Carbon Film ResistorThis is an 8 channel relay board that runs on 24 volts. Any microcontroller or other control system circuits can be used to control loads rated up to 250V 10A AC directly. Each relay has three connections: Common (C), Normally Open (NO), and Normally Closed (NC), all of which are connected to three pin screw terminals, making it simple to connect and disconnect. To make debugging easier, the board incorporates a power indicator and a relay status LED.