Need some help to pick the right components...
Is this the right Relay to use for a 24v 4a power supply...? I guees I need a 24v for a 24v power supply...?
5V 12V 24V 1-2-4-8 Channel Relay High Low Level Optocoupler Module Arduino PI | eBay
For the LDR is it correct that I need a 10k resistor...? or does it need to be a different size...?