Chamberlain / Accessory reference

Chamberlain 300MC

Chamberlain 300MC: The source identifies 300MC as a Chamberlain transmitter at 300 MHz, described as Multi-Code compatible.

US source scopeUpdated 2026-09-12Independent Anderson reference

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Manufacturer identifier: 300MC. Keep every character when comparing it with your label or paperwork. A similar number does not establish the same component.

Denco supplier reference: RC 300MCh1; span.sku; Description three bullets: Multi-Code scope, frequency and explicit LiftMaster exclusion · checked 2026-09-12 · Denco

Values apply to the exact identifier and scope in the cited source.
Supplier-stated detail	The source identifies 300MC as a Chamberlain transmitter at 300 MHz, described as Multi-Code compatible. Denco supplier reference: RC 300MCh1; span.sku; Description three bullets: Multi-Code scope, frequency and explicit LiftMaster exclusion · checked 2026-09-12 · Denco
Supplier-stated detail	The supplier explicitly states it is not compatible with LiftMaster products. Denco supplier reference: RC 300MCh1; span.sku; Description three bullets: Multi-Code scope, frequency and explicit LiftMaster exclusion · checked 2026-09-12 · Denco
Selection limitation	Navigation under LiftMaster does not change the stated Chamberlain identity or remove the exclusion. An exact Multi-Code receiver list is not supplied. Denco supplier reference: RC 300MCh1; span.sku; Description three bullets: Multi-Code scope, frequency and explicit LiftMaster exclusion · checked 2026-09-12 · Denco

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No direct successor for 300MC is verified in this reference.

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Sources & scope

Denco supplier reference: RC 300MCDenco · US · checked 2026-09-12

Anderson prepared this reference from the listed evidence. Source statements are not an Anderson installation inspection or independent product test. Official documents stay on their publisher’s website.

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