{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"61F-GP-NL 4KM AC120","brand":"Omron","brandSlug":"omron","productSlug":"61F-GP-NL-4KM-AC120","canonicalUrl":"https://aoctrl.com/omron/61F-GP-NL-4KM-AC120","factsUrl":"https://aoctrl.com/api/mcp/products/61F-GP-NL%204KM%20AC120","rawCanonicalId":null},"summary":{"shortDescription":"Omron 61F Series, High/Low Level liquid level controller, 120VAC supply, SPDT (2 Form C) relay output, sensitivity 0 ~ 0.5kOhm, 4km max control-to-sensor distance, socketable with 11-pin octal plug.","salesMarkdown":"The Omron 61F-GP-NL 4KM AC120 is a High/Low Level liquid level controller from the 61F series, built for remote tank monitoring where the sensor sits a long way from the control panel. It operates on a 120VAC supply and uses a SPDT (2 Form C) relay output to drive pumps, valves, or alarms based on conductive probe readings. The headline spec is the 4 km maximum distance between the controller and the sensing electrode — that is not a typo. It means this unit handles tank farms, elevated reservoirs, or remote sumps where a standard level relay would drop out from line resistance. The sensitivity range of 0 to 0.5 kOhm lets it work with clean water or moderately conductive process liquids. The relay contacts are rated 3 A at 250 VAC, which is enough to switch a small pump contactor coil or a pilot light directly. For larger motor loads, use this relay as the pilot device to energize a contactor — the 3 A rating is the switching limit, not the load it drives continuously. Termination is via an 11-pin octal plug (socketable), which means the base stays wired in the panel and the controller module swaps out in seconds — useful for MRO spares or quick replacement on a down line. Wire the base once for the 120VAC supply, the probe connections, and the relay output; the controller module plugs in after wiring is complete. This keeps the electronics out of the panel during construction and simplifies troubleshooting — pull the module, check continuity on the base, and swap if needed.","metaTitle":"Omron 61F-GP-NL 4KM AC120 Level Controller, 120VAC, 4km","metaDescription":"Omron 61F-GP-NL 4KM AC120 High/Low Level controller, 120VAC, SPDT relay, 4km sensor distance, sensitivity 0-0.5kOhm. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["General Purpose Relays"],"specifications":{"Type":"High/Low Level","Series":"61F","Weight":"0.342 lb (155.13 g)","Package":"Bulk","Output Type":"Relay","Sensitivity":"0 ~ 0.5kOhm","Contact Form":"SPDT (2 Form C)","Mounting Type":"Socketable","lifecycle_stage":"mature","Voltage - Supply":"120VAC","Termination Style":"Plug In, 11 Pin (Octal)","Operating Temperature":"-10°C ~ 55°C","Contact Rating @ Voltage":"3A @ 250VAC","Distance - Control To Sensor (Max)":"4km"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/522756c82eecdf8715481f0dac2b20b3.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/61F-GP-NL%204KM%20AC120/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 61F-GP-NL 4KM AC120 in this component family?","answer":"Within the Omron 61F series, other models share the same 11-pin octal base and socketable form factor, but the 4 km distance rating and 0 ~ 0.5 kOhm sensitivity range are specific to this variant. Check the 61F-GP-NL catalog for models with different supply voltages or sensitivity ranges if the 120VAC or 4 km spec does not match your application."},{"question":"What is 61F-GP-NL 4KM AC120's listed type (High/Low Level) on this component line?","answer":"The listed type is High/Low Level, meaning it controls fill and drain operations based on two probe levels — energizes the relay when liquid reaches the high probe and de-energizes when it drops below the low probe."},{"question":"What is 61F-GP-NL 4KM AC120's listed series (61F) on this component line?","answer":"It belongs to the Omron 61F series of conductive liquid level controllers, which use probe electrodes to detect liquid presence and switch relay outputs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/61F-GP-NL-4KM-AC120","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/61F-GP-NL-4KM-AC120 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}