The Omron 61F-GP-N2 110VAC is a High/Low Level controller from the 61F series, designed for conductive liquid level detection. It operates on a 110VAC supply and detects level through probe resistance, with a sensitivity range of 0 to 4kOhm. The unit is socketable, terminating via an 8-pin octal plug, and is rated for an operating temperature range of -10°C to 55°C.
The 0-4kOhm sensitivity range means the controller triggers on probe resistance across that span — typical for water or mildly conductive process liquids. The socketable, 8-pin octal form factor allows quick replacement without rewiring the base, which matters for maintenance swaps on a live panel. The 110VAC supply is line-voltage, so no step-down transformer is needed where 110V control power is available.