Linear / Garage door opener / Model guide
Linear/Nice 661: belt and chain configurations, battery and rail scope
Compare the two supplier-listed 661 drive configurations and understand which rail heights are explicitly selectable versus only listed in attributes.
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. The active selectors show seven and eight feet, while each additional-information field also lists ten feet. The ten-foot configuration remains unresolved; no selectable-variant SKU is given.
A product-manual label appears, but no manual destination or manual content was reviewed in this evidence batch. 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
| Belt configuration | The Linear/Nice 661 belt-drive listing describes a DC motor with soft start/stop and automatic force learning and adjustment.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Belt Drive · Product title and description; technical table where stated |
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| Belt configuration | A Wi-Fi wall station, an installed prewired battery and integrated lighting are described.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Belt Drive · Product title and description; technical table where stated |
| Belt configuration | Travel limits are described as preset for a seven-foot door.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Belt Drive · Product title and description; technical table where stated |
| Belt configuration | The live rail selector lists seven and eight feet, while the additional-information rail field also lists ten feet.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Belt Drive · Product title and description; technical table where stated |
| Chain configuration | The Linear/Nice 661 chain-drive source describes a DC motor with soft start/stop and automatic force learning and adjustment.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Chain Drive · Product title and description; technical table where stated |
| Chain configuration | A Wi-Fi wall station, installed prewired battery and integrated lighting are described.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Chain Drive · Product title and description; technical table where stated |
| Chain configuration | Travel limits are described as preset for a seven-foot door.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Chain Drive · Product title and description; technical table where stated |
| Chain configuration | The rail selector shows seven and eight feet; the additional-information field also lists ten feet.Supplier assertion, scoped to this listing; no manufacturer engineering verification.Source: Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Chain Drive · Product title and description; technical table where stated |
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
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
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
- Denco supplier listing: Linear/Nice 661 Smart Garage Door Opener, Belt DriveDenco · checked 2026-09-13
- 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.
Need service in Connecticut? Check Anderson’s listed service areas or describe your equipment and symptom. This national reference library does not imply nationwide repair coverage.