Somfy Sonesse 40 404S2 RS485 SDN Motor (4Nm, 36rpm) (1240562)
Somfy Sonesse 40 404S2 RS485 SDN Motor (4Nm, 36rpm) (1240562)
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Somfy Sonesse 40 RS485 404S2 SDN Motor -- wired, two-way control built for commercial-grade SDN integration
The Sonesse 40 RS485 404S2 is a wired, bi-directional tubular motor that communicates over the industry-standard RS485 protocol for the Somfy Digital Network (SDN). Its slim head fits small-diameter tubes, making it a strong fit for narrow interior windows in offices, healthcare, hospitality, and education settings where hard-wired, addressable control is required over radio.
Benefits
- Two-way RS485 communication for SDN and animeo IP building-management integration
- Fits tubes with 38mm (1.46") or larger internal diameter -- ideal for narrow window openings
- Thin round head available in white, black, or grey to match hardware
- UL listed; IP31 rated, Class II insulation
- Standby draw under 0.5W; push-button programming with LED confirmation on the motor head
- 5-year Somfy warranty
Specifications
| Torque / Speed | 4 Nm (35 in-lb) / 36 rpm |
| Control | RS485 (Somfy Digital Network) |
| Power supply | 120V AC, 60Hz (108-132V, 0.95A) |
| Min. tube diameter | 38mm (1.46") |
| Cable | Fast Connector, 1.64 ft, white |
| Weight | 2.76 lb |
| Warranty | 5 years |
Compatible with: 40mm octagonal and round roller tubes, 400 Series crown and drive sets, SDN RS485 commissioning tools
Official Somfy documentation
- Sonesse 40 RS485 -- Spec Sheet (PDF)
- 400 Series -- Databook (PDF)
- Sonesse 40 RS485 404S2 -- Somfy Pro Product Page
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What is the Sonesse 40 RS485 404S2 motor used for?
Part 1240562 is a wired 120V tubular motor for interior roller shades on narrow windows. It talks two-way over RS485 on the Somfy Digital Network, so a building system can address each shade. Offices, hospitals, hotels and schools use it. It is UL listed, rated IP 31 and carries a 5-year Somfy warranty.
What torque and speed does it deliver?
Somfy rates part 1240562 at 4 Nm of torque and 36 rpm. It runs at 42 dB and uses 0.5 W on standby. For heavier shades, the same family includes the Sonesse 40 RS485 406A2 (1240563) and 409R2 (1240564).
What size roller tube does it fit?
Somfy lists a minimum tube inside diameter of 1.46 in, which suits 40mm tubes. Matching Somfy crown and drive sets in this store include 9012224 and the rubberized 9016654 for 40mm x 1.5mm round tube, and the rubberized 9016655 for 40mm octagonal tube.
How is it powered?
It needs 120V AC at the window, within Somfy's range of 108 V to 132 V, and draws 0.95 A. Power connects through the 1.64 ft Fast Connector cable on the motor. The motor weighs 2.76 lb.
Which controls work with this motor?
This motor has no RTS radio, so handheld RTS remotes will not pair with it. Commands come over the Somfy Digital Network from a Somfy wall switch or a third-party control system. A programming button on the motor head handles setup, and Somfy's SDN Connect design guide covers system layout.
Which power cables fit it?
It takes Somfy 3-conductor Fast Connector extension cables. This store carries versions with a NEMA plug at 1.4 ft (9021113), 4.4 ft (9021114), 8.4 ft (9021115), 10.4 ft (9020791), 18 ft (9020792) and 24 ft (9020793), plus an 8.4 ft cable without a plug (9021157).
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How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
| Specification | You're viewing
Somfy Sonesse 40 404S2 RS485 SDN Motor (4Nm, 36rpm) (1240562)
| 
Somfy Sonesse 40 404S2 WT 120V 4-Wire Motor (fast connect) (1240377)
| 
Somfy Sonesse 40 406A2 RS485 SDN Motor (6Nm, 24rpm) (1240563)
| 
Somfy LS40 404S2 Sonesse RTS 120V Motor without fast connector (1001636)
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|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 4.0 | 4.0 | 6.0 | 4.0 |
| Speed (rpm) | 36 | 36 | 24 | 36 |
| Control | RS485 (SDN) | Wired 4-wire | RS485 (SDN) | RTS radio |
| Power | 120V AC | 120V AC | 120V AC | 120V AC |
| Motor family | Sonesse 40 | Sonesse 40 | Sonesse 40 | Sonesse 40 |
| What's different | The product on this page | Same size, Wired 4-wire control | 6.0 Nm instead of 4.0 | Same size, RTS radio control |
| Buy | Currently viewing | View details | View details | View details |
