The Omron 61F-AN AC240 is a DIN-rail-mounted liquid level controller running on 240VAC supply. It's the Alternate Supply Control variant in the 61F-AN series, meaning it handles the supply-side switching for conductive liquid level detection — think fill or drain control in a tank, sump, or reservoir. Screw terminals keep wiring straightforward for panel integration.
The 240VAC supply voltage is the control power for the unit itself — not the probe voltage. The controller energizes its internal relay based on the conductivity between electrodes in the tank. DIN-rail mounting means it clips onto standard 35 mm rail inside the enclosure.