What you're sourcing
The Omron G3DZ-DZ02P DC24 is a 2 A solid state relay carrying the G3DZ series designation, used where a panel needs a no-moving-parts switch for a low-current DC load — distinct from an electromechanical relay because there is no arc, no contact bounce, and the input coil is replaced by an LED-driven opto-isolator stage.
Where the 2 A ceiling matters in a real panel
Solid state relays in this class typically land on heater bands, solenoid valves, indicator loops, or PLC output multiplexing — anywhere the load draws under 2 A and the switching duty is high enough that mechanical contact wear would shorten service life. The DC24 control coil tells you the input side expects 24 VDC logic — pair it to a PLC sourcing output or a 24 VDC pilot rail, not a 120 VAC control source, because the input rectifier stage is built for that one rail.