Somfy Sonesse 404S2 RTS Motor with Fast Connector (1240380)
Somfy Sonesse 404S2 RTS Motor with Fast Connector (1240380)
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Sonesse 40 RTS 404S2 RH with Fast Connector -- ultra-quiet 40mm tubular motor for interior window coverings
The Sonesse 40 RTS 404S2 RH with Fast Connector is a wired 120V tubular motor from Somfy's quietest interior shading range, delivering 4 Nm (35 in-lb) of torque at 36 rpm for roller shades, solar screens, Roman shades, and large-format blinds. Radio Technology Somfy (RTS) is built in, so it pairs directly with Somfy remotes, sensors, and TaHoma.
Benefits
- Ultra-quiet operation, engineered around 44 dBA with noise-absorbing brake, rotor, and gearbox
- Compact 40mm design fits smaller roller tubes and tighter headrails
- Electronic limits with streamlined RTS programming
- Compatible with Somfy's full range of RTS remotes, sensors, and timers
- Voice and app control by adding TaHoma
- Backed by Somfy's 5-year warranty
Specifications
| Torque / Speed | 4 Nm (35 in-lb) / 36 rpm |
| Radio Frequency | 433.420 MHz |
| Head type | Round |
| Control | Radio Technology Somfy (RTS), built-in receiver |
| Power | 120V AC, 60 Hz |
| Cable | 3-wire, 1.6 ft with Fast Connector |
| Limit type | Electronic |
| Protection / Noise | IP 44 / 44 dB |
| Warranty | 5 years |
Compatible with: 40mm round and octagonal tubes with matching Sonesse 40 / 400 Series crowns, drives, and brackets
Official Somfy documentation
- Sonesse 40 RTS – Spec Sheet (PDF)
- 400 Series Databook (PDF)
- RTS Pocket Programming Guide (PDF)
- Sonesse 40 RTS – 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 RTS 404S2 with Fast Connector built for?
Part 1240380 is a wired 120V motor from Somfy's quiet Sonesse 40 range for interior roller shades, solar screens, Roman shades and large blinds. Its compact 40mm body fits smaller tubes and tighter headrails.
What torque and speed does it deliver?
Somfy rates the 1240380 at 4 Nm and 36 rpm, with electronic limits. It has a round head and needs a tube with an inside diameter of at least 1.46 in. Somfy lists a noise level of 42 dB.
How is it powered and wired?
It runs on 120V/60Hz, draws 0.95 A and uses 110 W in operation. The motor has a 1.64 ft 3-wire cable that ends in a Fast Connector, so it plugs into a matching Somfy Fast Connector power cable.
Which remotes and switches work with it?
The built-in RTS receiver pairs with Somfy RTS transmitters such as the Situo 1 and Situo 5 RTS Pure remotes (1870571, 1870575), the Telis 16 RTS Pure (1811081) and DecoFlex RTS wall switches. It stores up to 12 transmitters.
Can I control it from an app or a voice assistant?
Yes. Add a Somfy TaHoma Switch (1871037) for app control, schedules and voice commands. For a set daily routine without a hub, the Telis 1 Chronis RTS timer (1805237) raises and lowers the shade at the times you choose.
Which crowns and drives fit?
Sonesse 40 and 400 Series hardware fits. Options include the LS40 Crown and Drive Set (9012224), the LS40 Rubberized and Octagonal Rubberized sets (9016654, 9016655) and the 400 Series to 500 Series Adaptor Kit (9012226).
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How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
| Specification | You're viewing
Somfy Sonesse 404S2 RTS Motor with Fast Connector (1240380)
| 
Somfy Sonesse 40 404S2 RS485 SDN Motor (4Nm, 36rpm) (1240562)
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Somfy Sonesse 40 Ultra WireFree Rechargeable RTS Lithium-ion Motor (1240485)
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Somfy Sonesse 40 RTS 406A2 RH with Fast Connector (1240381)
|
|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 4.0 | 4.0 | 3.0 | 6.0 |
| Speed (rpm) | 36 | 36 | 20 | 24 |
| Control | RTS radio | RS485 (SDN) | RTS radio | RTS radio |
| Power | 120V AC | 120V AC | 12V Li-ion battery | 120V AC |
| Motor family | Sonesse 40 | Sonesse 40 | Sonesse 40 | Sonesse 40 |
| What's different | The product on this page | Same size, RS485 (SDN) control | 3.0 Nm instead of 4.0 | 6.0 Nm instead of 4.0 |
| Buy | Currently viewing | View details | View details | View details |
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