Garage door operator BFt Botticelli BT 850 35 — motorised unit for sectional and up‑and‑over doors, residential and light commercial use

BFt Botticelli BT 850 35 is a 24 V motorised operator designed for sectional and up-and-over garage doors in residential and light commercial settings. The unit provides a tractive force of 850 N and is suitable for doors with a maximum surface area of 13 m². It supports intensive use and delivers opening speeds up to 210 mm/s with the chain rail and up to 240 mm/s with the belt rail. Position detection is performed by an encoder with a mechanical opening stop; the unit includes mechanical locking and a steel cord or cable release for emergency disengagement.

Advantages

The operator pairs a 24 V high-performance motor with microprocessor-driven torque management (D-Track) to provide consistent and adaptive thrust during opening and closing, maintaining safe operation despite temperature variations or mechanical wear. Installation is accelerated by the Autoset rapid setup routine and programming is possible via EElink. Models with full-display control units can integrate a burglar alarm function and the control electronics can serve as the central unit of a wired alarm system. U-Link interoperability and cloning support for compatible remotes simplify integration and remote maintenance.

Suitable for

• Residential sectional garage doors
• Light commercial up-and-over or sectional doors
• Locations requiring frequent daily movements

Key specifications

• Voltage: 24 V
• Tractive force: 850 N
• Maximum door surface area: 13 m²
• Opening speed (chain rail): up to 210 mm/s
• Opening speed (belt rail): up to 240 mm/s
• Power consumption: 200 W (0.5 W standby)
• Number of daily movements (at 60°): 50
• Limit detection: encoder plus mechanical opening stop
• Slowdown on approach: yes
• Locking: mechanical
• Release mechanism: steel cord or cable
• Impact reaction / force management: D-Track
• Protection rating: IP20
• Operating temperature range: -20 ÷ 60 °C
• Interconnectivity and remote programming support: U-Link, EElink

How to use

Fit the motorised unit to the garage door following the manufacturer’s mechanical and electrical instructions, ensuring correct alignment of the selected rail (chain or belt) and secure mechanical locking. Use the Autoset rapid setup procedure or connect a handheld programmer via EElink to configure travel limits, speeds and safety parameters. Pair compatible remote controls using the cloning function where available and set access credentials through the control unit interface. If the model includes alarm capability, configure burglar alarm parameters on the full-display control unit and, when required, connect the control board to a wired alarm system according to installation guidelines.

Recommendations

Carry out periodic maintenance checks including inspection of the rail, drive components, release cable and mechanical lock. Keep firmware and configuration backed up via EElink, and ensure installation and any wiring are performed by a qualified technician in accordance with local safety regulations.