Somfy · 40 series · ref. 1240377
Sonesse 40 WT 404S2 — 120 V
The Sonesse 40 without radio: a 120 V motor operated by a simple wall switch, at the lowest price in the 40 series.
Price
$355 MSRP
Motor only. Wall switch (from $30) and extension cable chosen for the project. Connection by an electrician.
Request a quote for a price tailored to your project: more motors, better price.Prices subject to change without notice.
- Torque 4 Nm
- Noise 42 dB
- Min. width Confirmed when measuring
- Power supply Wired 120 V
- Protocol WT
Motor 12 / 19 — All 19 motors
- 01 · Sonesse 28 WireFree RTS — External Battery$308 MSRP
- 02 · Sonesse 30 RTS 24V DC$470 MSRP
- 03 · Sonesse 30 RS485 24V DC$577 MSRP
- 04 · Sonesse 30 Zigbee 24V DC$550 MSRP
- 05 · Roll Up 28 WireFree RTS V2 — lithium-ion battery$341 MSRP
- 06 · Sonesse 28 WireFree RTS — lithium-ion battery$359 MSRP
- 07 · Sonesse ULTRA 30 WireFree Zigbee — lithium-ion battery$424 MSRP
- 08 · Sonesse ULTRA 30 WireFree RTS — lithium-ion battery$404 MSRP
- 09 · Sonesse 40 RS485 404S2 — 120 V$731 MSRP
- 10 · Sonesse 40 Zigbee 404S2 — 120 V$608 MSRP
- 11 · Sonesse 40 RTS 404S2 — 120 V$579 MSRP
- 12 · Sonesse 40 WT 404S2 — 120 V$355 MSRP
- 13 · Sonesse 40 Zigbee 409R2 — 120 V$639 MSRP
- 14 · Sonesse 40 WireFree RTS — lithium-ion battery$589 MSRP
- 15 · Sonesse 40 WireFree Zigbee — lithium-ion battery$703 MSRP
- 16 · Maestria+ 50 RTS 510A2$642 MSRP
- 17 · Maestria+ 50 RTS 525A2$723 MSRP
- 18 · Maestria+ 50 RTS 535A2$790 MSRP
- 19 · Maestria+ 50 RTS 550R2$819 MSRP
01 — At a glance
What sets this motor apart.
The Sonesse 40 WT (for "Wired Technology") is the wired version of the Sonesse 40 RTS: the same 4 newton-metre motor at 36 rpm, the same 42 dB, but without radio. A wire runs from the motor to the wall switch, which raises and lowers it.
The principle is simple: the limits are set right on the motor during installation, with progressive adjustment screws (no laptop and no electronic tool, according to Somfy). After that, the wall switch does the rest.
It is the motor for hard-wired projects: a switch at the room entrance, an IGC 4n1 controller for four blinds, or a building management system through dry contacts. With a universal RTS receiver, it can also take a remote.
Wall switch control
A Somfy wall switch, from $30, is all it takes to raise and lower the blind.
4 newton-metres at 36 rpm
The same mechanics as the Sonesse 40 RTS, without the radio.
42 dB
Four noise-reduction patents covering the brake, rotor, gearbox and accessories.
Mechanical limits
Progressive screw adjustment, no electronic tool; 40-turn capacity.
Fast connector
1.6 ft cable with fast connector; open-lead extensions from 4.4 to 22.4 ft.
The lowest price in the 40 series
$355 MSRP, compared with $579 for the RTS version.
02 — Spec sheet
The numbers, straight up.
Somfy documentation
All the official documentation (6 documents, French and English)
Specifications checked one by one against the Somfy Pro Canada catalogue on October 1, 2026.
| Torque | 4 Nm |
|---|---|
| Speed | 36 rpm |
| Noise level | 42 dB |
| Control | Wired (WT), by power switching: wall switch or control module |
| Power supply | 120 V AC, 60 Hz (108 to 132 V) |
| Power draw in operation | 110 W |
| Standby power | 0.46 W (Somfy catalogue) |
| Rated current | 0.95 A |
| Thermal protection | 4 minutes |
| Pulling force | 7 kg (15.4 lb) |
| Motor length | 18.82 in (478 mm) |
| Minimum blind width | Not published by Somfy — confirmed when measuring |
| Motor diameter | 40 mm |
| Compatible tube | Inside diameter of at least 38 mm (2 in and 2 in heavy duty) |
| Limits | Mechanical, progressive adjustment (PA), 40 turns |
| Connection | 1.6 ft (0.5 m) 4-wire SJTW cable with fast connector |
| Wires | Red: direction 1; black: direction 2; white: neutral; green: ground |
| Extensions (sold separately) | Open leads: 4.4 ft (9021117), 8.4 ft (9021118), 16.4 ft (9021120), 22.4 ft (9021121) |
| Version without fast connector | Ref. 1001553: 2 m cable with stripped leads, same price ($355 MSRP) |
| Weight | 1.125 kg (2.5 lb) |
| Protection rating | IP 44 (fast connector IP 55) — indoor use |
| Insulation class | Class I |
| Operating temperature | 0 to 60 °C |
| Storage temperature | −20 to 80 °C |
| Warranty | 5 years |
Official Somfy documentation
Every official Somfy document for this motor, gathered in one place by Le Gars des Stores, certified Somfy Expert. The PDFs open on Somfy's website.
In English (5)
Spec sheets
Installation and use
Technical catalogues
Wiring diagrams
Environment
In French (1)
Spec sheets
03 — Which blinds
The right blind for this motor.
Confirmed when measuring
Blind width
Somfy does not publish a minimum width for this motor.
It measures 18.82 in (478 mm), 1.65 in shorter than the Sonesse 40 RTS, which requires a blind at least 23 in wide.
The minimum width is confirmed when measuring, based on the blind's tube and end caps.
What to consider before choosing
- No radio. It responds to neither a remote nor the TaHoma switch, unless it is paired with a universal RTS receiver ($296 MSRP) or an IGC 4n1 controller fitted with its RTS receiver.
- 120 V connection by an electrician: four wires (two directions, neutral and ground) to the switch or controller. Its extension cables have open leads, with no plug.
- Somfy does not publish a minimum blind width for this motor. It measures 18.82 in, 1.65 in shorter than the Sonesse 40 RTS: the minimum width is confirmed when measuring.
- Other torques offered by Somfy: 406A2 (6 Nm, $364 MSRP) and 409R2 (9 Nm, $377 MSRP), to order.
04 — Compatibility and power
How it's powered and controlled.
- Power supply
- Wired 120 V
- Plugs into an ordinary outlet or is hard-wired. The most powerful for its size.
- Protocol
- WT
- No radio: a wall switch or an IGC controller. A remote can be added with a universal RTS receiver.
- Compatible tube
- Inside diameter of at least 38 mm (2 in and 2 in heavy duty)
- Family: 40 series
- Length
- 18.82 in
- Min. width: Confirmed when measuring
05 — Frequently asked questions
What customers ask.
How is a motor without radio operated?
The limits are set right on the motor during installation. Then a wire runs from the motor to the wall switch: one position to raise, one to lower. Somfy offers toggle or Decora switches, from $30. For several blinds, the IGC 4n1 controller operates four, with three intermediate positions.
Can a remote be added later?
Yes, with a universal RTS receiver ($296 MSRP) connected to the motor: it can then be operated with an RTS remote and the TaHoma switch.
WT or RTS: which one to choose?
The WT ($355) suits hard-wired projects, often commercial, where a switch or a central system operates the blinds. The RTS ($579) is operated wirelessly, by remote or app, and can plug into an ordinary outlet with a NEMA-plug extension.
Is an electrician needed?
Yes. Its extension cables have open leads: the 120 V connection, to the switch or controller, is made by an electrician.
Do you install in Montreal, Sherbrooke and the Eastern Townships?
Yes. Le Gars des Stores serves the West Island and Montreal, Vaudreuil-Dorion, the South Shore, the North Shore, western Laval and the Eastern Townships (Sherbrooke, Magog); elsewhere, depending on the project. We handle measuring, made-to-measure ordering, installation and programming.
06 — Same family
Compare with its neighbours.
40 series — compatible tube: inside diameter of at least 38 mm (2 in and 2 in heavy duty)
| Motor | Length | Min. width | Torque | Noise | Power supply | Price | View page |
|---|---|---|---|---|---|---|---|
| Sonesse 40 RS485 404S2 — 120 V | 20.24 in | 22 3/4 in | 4 Nm | 42 dB | Wired 120 V | $731 MSRP | |
| Sonesse 40 Zigbee 404S2 — 120 V | 20.24 in | 22 3/4 in | 4 Nm | 42 dB | Wired 120 V | $608 MSRP | |
| Sonesse 40 RTS 404S2 — 120 V | 20.47 in | 23 in | 4 Nm | 42 dB | Wired 120 V | $579 MSRP | |
| Sonesse 40 WT 404S2 — 120 V — this page | 18.82 in | Confirmed when measuring | 4 Nm | 42 dB | Wired 120 V | $355 MSRP | |
| Sonesse 40 Zigbee 409R2 — 120 V | 21.46 in | 24 in | 9 Nm | 40 dB | Wired 120 V | $639 MSRP | |
| Sonesse 40 WireFree RTS — lithium-ion battery | 25.59 in | 28 1/8 in | 3 Nm | 49 dB | Built-in lithium-ion battery | $589 MSRP | |
| Sonesse 40 WireFree Zigbee — lithium-ion battery | 25.59 in | 28 1/8 in | 4 Nm | 40 dB | Built-in lithium-ion battery | $703 MSRP |
Request a quote for a price tailored to your project: more motors, better price.Prices subject to change without notice.
Certified Somfy Expert
A motorization project?
Certified Somfy Expert, authorized distributor and installer. Sales, measuring, installation and programming: one team, since 2014.
The West Island and Montreal, Vaudreuil-Dorion, the South and North Shores, western Laval and the Eastern Townships. Elsewhere, depending on the project.
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