Somfy Sonesse 40 Ultra WireFree Rechargeable RTS Lithium-ion Motor (1240485)
Somfy Sonesse 40 Ultra WireFree Rechargeable RTS Lithium-ion Motor (1240485)
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Sonesse 40 WireFree RTS -- battery-powered, cordless roller shade motor
This wirefree Sonesse 40 motor runs on a rechargeable lithium-ion battery, so there's no wiring to run -- just charge it, mount it, and pair it to your RTS control. It's built to be extremely compact and designed for silence.
Benefits
- No electrician or in-wall wiring required -- battery powered
- Rechargeable lithium-ion battery for repeated use
- Extremely compact motor head designed for quiet operation
- RTS wireless remote and wall-switch control
- Compatible with optional solar charging to extend time between charges
Specifications
| Torque / Speed | 3 Nm / 20 rpm |
| Power | 12V DC rechargeable Li-ion battery, 20.4 W during operation |
| Control protocol | Radio Technology Somfy (RTS), built-in receiver |
| Radio Frequency | 433.420 MHz |
| Radio range, open field | 656 ft |
| Noise level | 49 dB |
| Protection index | IP 20 (interior use only) |
| Warranty | 5 years |
Compatible with: Somfy Li-ion battery packs, chargers, and RollEase crown/drive kits
Official Somfy documentation
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What is the Sonesse 40 WireFree RTS motor built for?
Part 1240485 is a battery-powered Somfy motor for interior roller shades and blinds. A built-in rechargeable lithium-ion battery runs it, so the window needs no power wiring or electrician. Charge it, mount it in the tube and pair it with an RTS control.
What torque and speed does it deliver?
Somfy rates the 1240485 at 3 Nm of torque and 20 rpm. It has a round head, needs a tube with an inside diameter of at least 1.46 in and has a limit capacity of 150 turns. Somfy lists a noise level of 49 dB.
How is the battery charged?
The 12V lithium-ion battery is built into the motor and charges through a removable charging cable. Somfy offers a solar charging option to stretch the time between charges. The motor draws 20.4 W while running and 0.01 W on standby.
Which remotes and switches work with it?
Any Somfy RTS transmitter, including the Situo 1 and Situo 5 RTS Pure remotes (1870571, 1870575), the Telis 16 RTS Pure (1811081) and DecoFlex RTS wall switches (1810813, 1810897). The motor stores up to 12 transmitters, and Somfy rates RTS range at 656.2 ft in open field.
Can I control it from my phone or a voice assistant?
Yes, with a Somfy TaHoma Switch (1871037), which adds app control, schedules and voice commands. For a daily routine without a hub, the Telis 1 Chronis RTS timer (1805237) raises and lowers the shade at set times. RTS is one-way radio, so the app cannot report the shade's position.
Where can it be installed, and which tubes fit?
Somfy rates this motor IP 20 for interior use, from 32 °F to 140 °F. It fits 40mm round and octagonal tubes (1781118, 1781154) with LS40 hardware such as the LS40 Crown and Drive Set (9012224). The motor carries Somfy's 5-year warranty.
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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 Ultra WireFree Rechargeable RTS Lithium-ion Motor (1240485)
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Somfy Sonesse 404S2 RTS Motor with Fast Connector (1240380)
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Somfy LS40 404S2 Sonesse RTS 120V Motor without fast connector (1001636)
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Somfy Sonesse 40 404S2 RS485 SDN Motor (4Nm, 36rpm) (1240562)
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|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 3.0 | 4.0 | 4.0 | 4.0 |
| Speed (rpm) | 20 | 36 | 36 | 36 |
| Control | RTS radio | RTS radio | RTS radio | RS485 (SDN) |
| Power | 12V Li-ion battery | 120V AC | 120V AC | 120V AC |
| Motor family | Sonesse 40 | Sonesse 40 | Sonesse 40 | Sonesse 40 |
| What's different | The product on this page | 4.0 Nm instead of 3.0 | 4.0 Nm instead of 3.0 | 4.0 Nm instead of 3.0, RS485 (SDN) |
| Buy | Currently viewing | View details | View details | View details |
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