Ten newton metres at thirty two rpm is a useful combination. It moves a large interior roller shade at a pace people notice as brisk, and it does the work at 47.2 dB. The Somfy Sonesse 510S2 RTS (1001807) sits in the middle of the Sonesse 50 range, above the 6 Nm 506S2 and below the heavy exterior motors.
Somfy lists it for interior window coverings, projection screens, and exterior solar screens. One motor covers a conference room, a theatre wall, and a west-facing screen.
The radio range number to plan around
Somfy publishes 164.05 ft of open field range for this motor. Most RTS motors in the catalogue publish 656.2 ft, so this one asks for a closer look at where the transmitter sits.
Open field means clear air with nothing between the remote and the motor. A house cuts that figure, and a commercial building with steel studs and foil-backed insulation cuts it further. A handheld two rooms away from a shade behind a plaster soffit is the install that goes quiet.
Plan the control layer with that in mind. A wall switch mounted in the same room works. A single handheld covering a whole floor is the plan to question before commissioning day rather than after.
Verified specifications
| Torque | 10 Nm (88 in-lb) |
| Speed | 32 rpm |
| Noise | 47.2 dB |
| Control | RTS, built-in receiver, 433.420 MHz |
| Channels | 12 |
| Radio range | 164.05 ft open field, rolling code |
| Power supply | 120V AC, 60 Hz, range 108V to 132V |
| Rated current | 1.67 A |
| Consumption | 200 W running, 0.5 W standby |
| Minimum tube inside diameter | 1.85 in |
| Head type | Star |
| Limits | Electronic, 250 turn capacity |
| Ingress rating | IP44 |
| Insulation class | Class I |
| Operating temperature | -4 F to 140 F |
| Warranty | 5 years |
Figures come from Somfy's published product record for 1001807, which lists the motor at 10 Nm rather than the 6 Nm of its 506S2 sibling. Somfy also publishes a 47.4 kg CO2 lifecycle footprint.
Thirty two rpm on a tall shade
Speed decides how a room feels when the shades move. At 32 rpm a 2.5 in tube pays out roughly 8 in of fabric per revolution, so a ten foot drop clears in under half a minute.
That pace suits a conference room where the shades move between meetings. It suits a projection screen too, since a slow descent turns the start of a presentation into an event.
Half a watt of standby draw is the cost of keeping the receiver listening. Across forty shades that is 20 W around the clock, which is worth a line in a commercial energy model and nothing at all in a house.
Crown, drive, and the 2.5 inch tube
The minimum internal diameter is 1.85 in, which puts a 2 in tube at the bottom of the range and a 2.5 in tube in comfortable territory for a wide opening.
On 2.5 in aluminium the pairing is the Somfy LT50 2.5" Crown (9707026) with the Somfy LT50 2.5" Hard Clip Drive (9206019). Shops cutting their own tube take the Somfy 2.5" OD Aluminum Tube (1781343), sold by the foot in 16 ft lengths.
A profiled 50 mm tube uses the Somfy Sonesse 50 Drive Wheel 50mm x 1.5mm Hard Clip (9016630) instead. Match the wheel to the wall thickness, not the nominal diameter. A 1.5 mm wall and a heavier wall take different parts.
Brackets, and the quiet one
The star head seats in the Somfy LT50 Star Head Motor Bracket (9410651), which is the default on new work. On a retrofit into an existing pocket the Somfy LT50 Universal Bracket with Spring Clip (9420631) saves cutting new holes.
A quieter option exists for rooms where 47.2 dB is already close to the limit. The Somfy RollEase Silent Pin Star Head Motor Bracket (9014135) isolates the head from the mounting surface, so motor noise stops travelling into the wall or the ceiling as structure-borne sound.
That bracket is worth specifying in a bedroom, a boardroom, or anywhere a hard soffit would act as a sounding board.
Control at the opening
The RTS receiver lives inside the motor, so the shade takes a 3-wire power connection and nothing else. Limits get set from a transmitter, and the motor remembers 12 channels.
A single opening runs on the Somfy Situo 1 Channel RTS Pure Remote (1870571). A room with several shades takes the Somfy Telis 16 Channel RTS Pure Hand Held Remote (1811081), which addresses each shade individually and holds a group channel for the bank.
Adding a TaHoma hub later brings the app, schedules, and voice to the same motor. Given the 164 ft radio figure, a hub also gives a fixed transmitter in a known position rather than a handheld that wanders to another floor.
Ordering
Confirm the tube's inside diameter clears 1.85 in, then order the Sonesse 510S2 RTS (1001807) with a crown and drive matched to the tube, a star head bracket, and one RTS transmitter for commissioning. Specify the silent pin bracket in quiet rooms. Somfy covers the motor for 5 years.
Questions we get on this motor
How does the 510S2 differ from the 506S2?
Torque. Somfy publishes 10 Nm for the 510S2 and 6 Nm for the 506S2, with both running at 32 rpm on the same LT50 platform, the same star head, and the same 1.85 in minimum tube. Pick the 510S2 for a wider or heavier shade and the 506S2 for a standard opening.
How far will the remote reach?
Somfy publishes 164.05 ft in open field for this motor, which is shorter than the 656.2 ft figure on much of the RTS range. Walls, steel framing, and foil-backed insulation all reduce it. Keep the transmitter in the same room where possible, or fit a wall control at the opening.
Is 47.2 dB quiet enough for a bedroom?
It sits around the level of a quiet room with the windows closed, and most clients accept it. In a bedroom or a recording space, pair it with the silent pin bracket so motor noise does not transfer into the structure, or move to a Sonesse Ultra DC motor for a lower published figure.
Can this motor go on an exterior screen?
Somfy rates it IP44 and lists exterior solar screens among its applications alongside interior shades and projection screens. Mount the head so water drains away from the cable entry, and leave a drip loop below it.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
