Somfy 540R2 CMO 120V 4-Wire Motor (1049026)
Somfy 540R2 CMO 120V 4-Wire Motor (1049026)
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540R2 CMO standard 4-wire tubular motor for shutters, screens and awnings
The 540R2 CMO is a wired 120V tubular motor for rolling shutters, retractable awnings and exterior screens, with a compact manual override (CMO) so the application can still be cranked by hand during a power outage. It has no radio receiver: control comes from a wired wall switch or a Somfy motor controller, which makes it the straightforward choice where the switch position is already fixed and the install is being wired anyway.
Benefits
- 40 Nm of torque for heavy shutters, wide awnings and large exterior screens
- Compact manual override (CMO) crank keeps the application usable during a power outage
- Wired 4-wire control -- no radio pairing, no batteries, nothing to re-program
- Mechanical end limits set on the motor head
- Add an RTS or Zigbee receiver later if the job needs remote, app or voice control
- Backed by Somfy's standard 5-year warranty
Specifications
| Torque / Speed | 40 Nm / 14 rpm |
| Control | Standard 4-wire, wired wall switch (no built-in radio receiver) |
| Override | Compact Manual Override (CMO) |
| Head type | Star |
| Power | 120V AC / 60 Hz |
| Application | Rolling shutters, retractable awnings, exterior screens |
| Warranty | 5 years |
Compatible with: Rolling shutters, retractable awnings, and exterior screens
Official Somfy documentation
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What is the 540R2 CMO motor built for?
Somfy built this wired 120V tubular motor for awnings and rolling shutters. CMO stands for compact manual override, which lets you operate the awning or shutter by hand if the power fails.
What torque and speed does it deliver?
Somfy rates part 1049026 at 40 Nm of torque and 14 rpm. It carries an IP 44 rating, works from -13 °F to 158 °F, and comes with Somfy's 5-year warranty.
How is this motor controlled?
It is a standard 4-wire motor with no radio receiver, so a wired wall switch or a Somfy motor controller runs it. RTS remotes and TaHoma cannot pair with it on their own.
How is it powered and wired?
It runs on 120V AC, rated from 108 V to 126 V, and draws 210 W in operation. It ships with a 6.56 ft, 4-wire cable with stripped ends, and the cable detaches from the motor.
What kind of limits does it use?
It uses mechanical limits with a 34-turn capacity. You set the end stops at the motor head during installation, with no radio pairing or programming involved.
What tube and hardware does it fit?
Somfy lists a minimum tube inside diameter of 1.85 in and a CMO head. Matching hardware in our store includes the Octagonal LT50 60MM and 70mm Crown/Drive Sets (9012233, 9012234) and the Motor Bracket for Sunea CMO RTS, US (9015802).
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How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
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Somfy 540R2 CMO 120V 4-Wire Motor (1049026)
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|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 40.0 | 40.0 | 35.0 | 50.0 |
| Speed (rpm) | 14 | 14 | 20 | — |
| Control | Wired 4-wire | RTS radio | Wired 4-wire | Wired 4-wire |
| Power | 120V AC | 120V AC | 120V AC | 120V AC |
| Motor family | LT50 | LT50 | LT50 | LT50 |
| Manual crank override | Yes | Yes | Yes | Yes |
| What's different | The product on this page | Same size, RTS radio control | 35.0 Nm instead of 40.0 | 50.0 Nm instead of 40.0 |
| Buy | Currently viewing | View details | View details | View details |
