Equipment reference / Air switches: contact state, wires and treadle-hose exclusions

Air switches: contact state, wires and treadle-hose exclusions

Compare normally-open, normally-closed and convertible contacts; retain the explicit treadle-hose exclusion on the three-wire gummed-hose switch.

US source scopeReference updated 2026-09-13

Identification details & limits

Reference identifier: Air switches: contact state, wires and treadle-hose exclusions. Compare each listed detail with the exact product and the source document. Do not submit a personal serial number or access code to this website.

Denco accessory source: COA N/CAIRSWTCHProduct detail title, literal identifiers and recorded technical facts · checked 2026-09-12 · Denco
Denco accessory source: COA N/OAIRSWTCHProduct detail title, literal identifiers and recorded technical facts · checked 2026-09-12 · Denco
Denco accessory source: COA 32NO-MO3Product detail title, literal identifiers and recorded technical facts · checked 2026-09-12 · Denco

Identification and scope details from the cited sources; each row retains its source locator.
Exact supplier identifier	COA N/CAIRSWTCH Denco accessory source: COA N/CAIRSWTCHProduct detail title and exact supplier SKU · checked 2026-09-12 · Denco
COA N/CAIRSWTCH	The title identifies a normally closed air switch. Denco accessory source: COA N/CAIRSWTCHProduct detail title and Description list · checked 2026-09-12 · Denco
COA N/CAIRSWTCH	The supplier describes an exterior two-wire switch in a metal box and recommends driveway treadle hose. Denco accessory source: COA N/CAIRSWTCHProduct detail title and Description list · checked 2026-09-12 · Denco
Exact supplier identifier	COA N/OAIRSWTCH Denco accessory source: COA N/OAIRSWTCHProduct detail title and exact supplier SKU · checked 2026-09-12 · Denco
COA N/OAIRSWTCH	The title identifies a normally open air switch. Denco accessory source: COA N/OAIRSWTCHProduct detail title and Description list · checked 2026-09-12 · Denco
COA N/OAIRSWTCH	The supplier describes an exterior two-wire switch in a metal box and recommends driveway treadle hose. Denco accessory source: COA N/OAIRSWTCHProduct detail title and Description list · checked 2026-09-12 · Denco
Exact supplier identifier	COA 32NO-MO3 Denco accessory source: COA 32NO-MO3Product detail title and exact supplier SKU · checked 2026-09-12 · Denco
COA 32NO-MO3	The supplier describes a gummed-hose air switch with selectable normally-open or normally-closed operation. Denco accessory source: COA 32NO-MO3Product detail title and Description list · checked 2026-09-12 · Denco
COA 32NO-MO3	It is described as an exterior three-wire switch. Denco accessory source: COA 32NO-MO3Product detail title and Description list · checked 2026-09-12 · Denco
COA 32NO-MO3	The supplier explicitly excludes driveway treadle hose. Denco accessory source: COA 32NO-MO3Product detail title and Description list · checked 2026-09-12 · Denco
Source scope and missing specifications	No contact-current rating, actuation pressure, hose dimensions or exact treadle-hose SKU is identified. Denco accessory source: COA N/CAIRSWTCHProduct detail scope and omitted fields · checked 2026-09-12 · Denco
Source scope and missing specifications	No contact-current rating, actuation pressure or exact supported hose identifier is supplied. The exclusion is retained for the hose class without inventing a pairing to every catalog hose. Denco accessory source: COA 32NO-MO3Product detail scope and omitted fields · checked 2026-09-12 · Denco

Sources & review dates

Denco accessory source: COA N/CAIRSWTCHDenco · US · checked 2026-09-12
Denco accessory source: COA N/OAIRSWTCHDenco · US · checked 2026-09-12
Denco accessory source: COA 32NO-MO3Denco · US · checked 2026-09-12

This independent reference preserves the source’s stated scope. It does not report an Anderson installation inspection, product test or safety clearance.

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The cited sources define the product details shown here; comparison does not establish fitment. Anderson’s repair service covers its listed Connecticut communities; this national reference does not imply nationwide service.