Linear/Nice 661: belt and chain configurations, battery and rail scope

Match the model before choosing a document

Identifier: 661. Keep every letter and suffix on your product label when checking applicability.

Denco lists both belt-drive and chain-drive configurations for Linear/Nice 661. The shared description identifies a DC motor with soft start and stop, a Wi-Fi wall station, an installed prewired battery and integrated lighting.

Both sources describe travel limits preset for a seven-foot door. At the recorded source check, the selectors showed seven and eight feet, while each additional-information field also listed ten feet. The ten-foot configuration remains unresolved; no selectable-variant SKU is given.

The supplier listings include a product-manual label, but this reference has no verified manual link or manual content for 661. The links below identify the two supplier listings and their limits; they do not establish installation instructions or compatibility with every door of a stated height.

Documented specifications

Supplier listings & source scope

These links open supplier product listings. Check the exact model and configuration stated in each listing; they are not manufacturer manuals.

Filter the documents listed below by model or document type. A match is not confirmation of your unit’s revision or installed accessories; read the scope note before using a document.

2 of 2 listed documents shown.

• supplier listing
  Denco Linear/Nice 661 Smart Garage Door Opener, Belt Drive supplier listing ↗

  The exact model label appears in this supplier title. This is a product listing, not an official manufacturer manual, repair procedure or compatibility chart.

  Models: 661enRevision not verifiedUS
• supplier listing
  Denco Linear/Nice 661 Smart Garage Door Opener, Chain Drive supplier listing ↗

  The exact model label appears in this supplier title. This is a product listing, not an official manufacturer manual, repair procedure or compatibility chart.

  Models: 661enRevision not verifiedUS

Before applying these details

• Facts describe the supplier-listed configuration. Current stock, warranty entitlement, exact installed-door fitment and independent performance tests are not established.
• The links in this guide are supplier product listings. A manufacturer-hosted manual is not included.

Sources & scope

1. Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Belt DriveDenco · checked 2026-09-13
2. Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Chain DriveDenco · checked 2026-09-13

Anderson prepared this independent reference from the listed sources. It is not the manufacturer’s official support site, an installation inspection or a product test. Current stock, parts availability and warranty entitlement are not established by a listing.