Somfy 550R2 RTS CMO (1051466)
Somfy 550R2 RTS CMO (1051466)
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LT50 550R2 RTS CMO motor -- 50 Nm radio motor with manual crank override
The Somfy 550R2 RTS CMO is a heavy-duty LT50-series 120V tubular motor delivering 50 Nm of torque at 14 rpm, with a built-in RTS radio receiver and a compact manual override (CMO) so the application can still be cranked by hand during a power outage. Factory reference 550R2 RTS CMO 50/14.
Benefits
- 50 Nm (440 in-lb) of torque at 14 rpm for large, heavy applications
- Compact manual override (CMO) crank keeps the application usable during a power outage
- Built-in RTS receiver runs on Somfy remotes and wireless wall switches, no external receiver
- Compatible with Somfy RTS sensors, timers, and TaHoma
- Star drive head fits the full LT50 crown and drive ecosystem
- Genuine Somfy quality, backed by a 5-year warranty
Specifications
| Torque / Speed | 50 Nm (440 in-lb) / 14 rpm |
| Radio Frequency | 433.420 MHz |
| Control | Radio Technology Somfy (RTS), built-in receiver, with CMO manual override |
| Head type | Star |
| Power | 120V AC, 60 Hz |
| Limit type | Mechanical, rapid-adjustment push buttons |
| Warranty | 5 years |
Compatible with: LT50 / 500 Series tubes, crowns, drives, brackets, and CMO crank handles
Official Somfy documentation
- LT50 / 500 Series – Databook (PDF)
- RTS Pocket Programming Guide (PDF)
- LT50 550R2 RTS CMO – Somfy Pro Product Page
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What torque and speed does the 550R2 RTS CMO deliver?
Somfy rates part 1051466 at 50 Nm of torque and 14 rpm. It runs on 120V/60Hz, draws 2.1 A and 250 W, and suits awnings and rolling shutters.
What does CMO mean?
CMO stands for compact manual override. The motor head accepts a crank, so an awning or shutter can be moved by hand during a power outage.
Does it need an external receiver?
No. An RTS radio receiver is built in, so Somfy RTS remotes and wall switches control it with no receiver or control wiring. The motor stores up to 12 channels, and Somfy rates open-field range at 656.2 ft.
Which remotes and switches work with it?
Any Somfy RTS transmitter works, including Telis 1 (1810643) and Telis 4 (1810645) Patio remotes, Situo RTS Pure remotes, the Situo 5 Soliris RTS Pure II (1870579), DecoFlex RTS wall switches and the Telis 1 Chronis RTS timer (1805237).
How is it wired, and how are the limits set?
It ships with a 9.84 ft SJTW cable with 3 wires. Limits are set mechanically with the push buttons on the CMO limit switch unit at the motor head, and Somfy lists a thermal time of 5 min for long runs.
What tube size does it need, and can it go outdoors?
Somfy lists a minimum tube inside diameter of 1.85 in and an IP 44 rating. The compatible parts on this page include LT50 crown and drive sets and the Motor Bracket for Sunea CMO RTS (9015802).
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How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
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Somfy 550R2 RTS CMO (1051466)
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|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 50.0 | 50.0 | 40.0 | 50.0 |
| Speed (rpm) | 14 | — | 14 | 14 |
| Control | RTS radio | Wired 4-wire | RTS radio | Wired 4-wire |
| Power | 120V AC | 120V AC | 120V AC | 120V AC |
| Motor family | LT50 | LT50 | LT50 | LT50 |
| Manual crank override | Yes | Yes | Yes | — |
| What's different | The product on this page | Same size, Wired 4-wire control | 40.0 Nm instead of 50.0 | Same size, Wired 4-wire control |
| Buy | Currently viewing | View details | View details | View details |
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