Somfy 525A2 Altus RTS 120V Motor (1043423)
Somfy 525A2 Altus RTS 120V Motor (1043423)
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Altus RTS tubular motor -- universal RTS motor for shutters, screens, and awnings
The Altus RTS motor is Somfy's universal tubular motor for rolling shutters, retractable awnings, and exterior screens, with a radio receiver built in so it runs on Somfy RTS remotes and wall switches with no separate receiver to install.
Benefits
- Built-in RTS radio receiver -- no external receiver or control wiring needed
- Plug-and-play power cord, or hardwire it in -- interchangeable cord lengths available
- Limits set and adjusted directly from a handheld RTS remote
- Long-range RTS control (no line-of-sight needed) plus smartphone/tablet and voice control via TaHoma
- Motorized awnings can cut summer heat gain up to 77%; screens can block up to 90% of solar rays
Specifications
| Torque / Speed | 25 Nm / 20 rpm |
| Overall length | 26.1 in (663 mm) |
| Minimum tube inside diameter | 1.85 in |
| Radio Frequency | 433.420 MHz |
| Head type | Star |
| Control | Radio Technology Somfy (RTS), built-in receiver |
| Power | 120V, plug-in or hardwired |
| 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 Altus RTS 525A2 used for?
Part 1043423 is Somfy's universal tubular motor for rolling shutters, retractable awnings and exterior screens. Its built-in RTS radio receiver removes the need for an external receiver or control wiring, and you set and adjust limits from a handheld RTS remote.
What torque, speed and tube size does it take?
Somfy rates the 1043423 at 25 Nm of torque and 20 rpm, with a noise level of 56 dB. It has a star head and fits tubes with an inside diameter of 1.85 in or larger.
What power does it need?
It runs on 120V/60Hz AC, with an operating range of 108 V to 132 V, a rated current of 1.6 A and a 180 W draw while running. It ships with a removable 9.84 ft, 3-wire SJTW cable, and you can plug it in or hardwire it.
Which remotes and switches work with it?
Any Somfy RTS transmitter, including the Telis 1 and Telis 4 RTS Patio remotes (1810643, 1810645), the Situo 5 Channel RTS Pure remote (1870575) and DecoFlex RTS wall switches (1810813, 1810897). It holds up to 12 channels, and Somfy rates RTS range at 656.2 ft in open field.
Can it retract an awning when the wind picks up?
Yes, with a Somfy RTS wind sensor. The Eolis 3D WireFree RTS wind sensor senses wind-generated movement and signals the motor to retract the awning. It comes in white (1816081), black (1816082) and off-white (1816083).
Can I control it from an app or on a schedule?
Yes. A TaHoma Switch hub (1871037) adds app and voice control for RTS motors, and the Telis 1 Chronis RTS timer (1805237) runs the motor on a set schedule. RTS is one-way radio, so the app sends commands but cannot report position.
Couldn't load pickup availability
Replace an LT50 motor or build a new shade, screen or awning around it.
Replacing? Your fabric stays on the tube. Building new? Every part below is Somfy-matched to part 1043423.
123- 1Motor head Mounts to the bracket at the motor end.
- 2Crown Grips the inside of the tube.
- 3Drive Turns the tube.
Replacing a motor
-
1
Cut power, take it down
Turn off the circuit, then lift the roller out of its brackets.
-
2
Pull the old motor
Slide it out of the tube and take off its crown and drive.
-
3
Fit LT50 crown and drive
Pick the set for your tube, slide the new motor in and seat the star head in its bracket.
-
4
Pair and set limits
Pair your Somfy RTS remote, then set the top and bottom limits.
Not sure of your tube size or head type? Send us a photo of the label on your old motor. We'll confirm the part before you order. Ask us
Building something new
-
1
Measure the tube
Measure across the outside of the tube end and note its shape. That sets the crown and drive.
-
2
Pick the parts
Add the crown and drive, the motor bracket and a remote or switch from the list below.
-
3
Mount and fit
Fit the crown and drive, slide the motor into the tube and seat the head in its bracket.
-
4
Pair and set limits
Pair your Somfy RTS remote, then set the top and bottom limits.
Planning a new shade, screen or awning? Send us the size and tube. We'll build the parts list with you. Ask us
Find your crown, drive and bracket.
1Measure the tube end, outside edge to outside edge.
If a row lists a wall thickness, match that too.
2Pick the bracket that matches how your shade mounts.
Every bracket here fits this motor's head.
Not sure? Send us a photo of the tube end and the motor end. Ask us
What the 525A2 Altus RTS 120V Motor needs to run
Somfy lists every part below as compatible with part 1043423. Pick one from each row.
1Control
Built-in RTS radio. Any Somfy RTS remote, wall switch or timer pairs with it.
2Tube fit
Match the crown and drive to your tube size and profile.
3Mounting
Holds the motor head and the idle end in place.
Somfy backs the 525A2 Altus RTS 120V Motor for 5 years. We handle the claim.
Somfy warranty on the 525A2 Altus RTS 120V Motor, part 1043423.
- What Somfy covers
- Defects in materials and workmanship, for 5 years from purchase.
- If it fails
- Email us your order number. We arrange the replacement with Somfy.
- Where it comes from
- ShadeMotorsDirect is an authorized Somfy distributor. You get the US version, new in Somfy packaging.
- Returns
- Unopened items in original packaging. Ask us for an RA number before you ship.
- Questions
- Call or chat, 8:00 AM - 7:30 PM ET.
- Somfy documents
- 500 Series Databook (PDF)LT50 Altus RTS Spec Sheet (PDF)
How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
| Specification | You're viewing
Somfy 525A2 Altus RTS 120V Motor (1043423)
| 
Somfy 525A2 120V 4-Wire Motor (1043424)
| 
Somfy 510S2 Altus RTS 120V 3-Wire Motor (1038165)
| 
Somfy 530R2 Altus RTS 120V 3-Wire Motor (1038169)
|
|---|---|---|---|---|
| Price | ||||
| Torque (Nm) | 25.0 | 25.0 | 10.0 | 30.0 |
| Speed (rpm) | 20 | 20 | 38 | 14 |
| Control | RTS radio | Wired 4-wire | RTS radio | RTS radio |
| Power | 120V AC | 120V AC | 120V AC | 120V AC |
| Motor family | LT50 | LT50 | LT50 | LT50 |
| What's different | The product on this page | Same size, Wired 4-wire control | 10.0 Nm instead of 25.0 | 30.0 Nm instead of 25.0 |
| Buy | Currently viewing | View details | View details | View details |
Guides for this product
Somfy Telis 1 Chronis RTS Timer Remote Setup and Pairing Guide
The Somfy Telis 1 Chronis RTS (1805237) adds a daily timer to a single-channel RTS remote. Pairing, clock setup and... Read
Somfy Altus 50 and Altus 60 RTS Names Matched to US Models
Read an Altus 60 RTS 85/17 or Altus 50 RTS label, then match its torque and tube to the 120V... Read
