Tube diameter decides this motor before torque does. The Somfy LT60 Altus RTS 660R2 needs a tube with a minimum inner diameter of 2.37 in, so a 2 in roller tube will not take it. Measure the tube first. A fabricator running a 16 ft awning bar or a wide rolling shutter curtain lands on the 600 Series for exactly that reason, and the 660R2 sits at the entry of the LT60 Altus RTS range with 60 Nm on tap.
The 600 Series job this motor takes
Somfy builds the LT60 platform for awnings and rolling shutters that outgrow the LT50. The 660R2 carries a Somfy reference of 1162271 and an official name of 660R2 ALTUS RTS 60/14 SJTW 10F. That name carries the torque, the speed, the cable type and the cable length, all in one string an installer can check against the box label.
Retractable awnings and rolling shutters are the two applications Somfy lists for this reference. Both put real weight on a motor. A rolling shutter curtain in aluminum slats over a wide opening keeps adding mass as the slat count climbs, and an awning bar with a heavy valance loads the tube every cycle. The 660R2 answers both at 60 Nm, which converts to 531 in-lb.
Installers reach past this motor when the load climbs further. Somfy sells the 680R2 at 80 Nm and the 6100R2 at 100 Nm on the same LT60 platform, so a project that outgrows 60 Nm stays inside the same tube diameter and the same bracket family. That continuity keeps the 660R2 a safe first choice on a job where the final fabric weight is still moving.
RTS control with the receiver already inside
The 660R2 carries a Somfy RTS radio receiver in the motor head. An installer pairs a handheld remote or a wall switch straight to the motor, with no external receiver to mount and no control wiring to pull back to a switch box. The radio runs at 433.420 MHz with a rolling code drawing on 16 million possibilities, and the motor holds up to 12 channels.
Somfy publishes a range of 164.05 ft in open field for this reference. Plan the remote position against that figure on a long patio run, and remember that walls and metal shutter boxes cut into it. The Situo 1 Channel RTS Pure Remote covers a single awning or shutter, and it also sets the limits, so a technician never climbs back up to a mechanical adjuster.
A patio with several openings wants more channels on one handset. The Telis 4 RTS Multi-Channel Patio Remote runs four channels plus a group command from an outdoor-rated body. For an awning that should react to weather on its own, the Situo 5 Soliris RTS Pure II adds sun-sensor automation across five channels, so the fabric retracts on a schedule the owner sets once.
TaHoma brings the same motor into a phone app and into voice control, since TaHoma speaks RTS. That path costs nothing at the motor. Pair the 660R2 to the hub the same way a remote pairs to it.
Verified specifications
| Specification | Somfy published value |
|---|---|
| Somfy reference | 1162271 |
| Official name | 660R2 ALTUS RTS 60/14 SJTW 10F |
| Torque | 60 Nm (531 in-lb) |
| Speed | 14 rpm |
| Power supply | 120V AC, 60 Hz, 108 to 126 V |
| Rated current | 2.5 A |
| Consumption in operation | 285 W |
| Standby consumption | 0 W |
| Radio frequency | 433.420 MHz, rolling code |
| Channels | 12 |
| Radio range, open field | 164.05 ft |
| Sound level | 63 dB |
| Protection index | IP 44 |
| Insulation class | Class I |
| Head type | Star |
| External diameter | 2.26 in |
| Minimum tube inner diameter | 2.37 in |
| Length, unwrapped | 27.56 in |
| Limit switches | Electronic, 200 turn capacity |
| Cable | SJTW, 3 conductor, 9.84 ft |
| Operating temperature | -4°F to 158°F |
| Storage temperature | -4°F to 176°F |
| Thermal protection | 4 min |
| Applications | Awning, rolling shutter |
| Certification | UR |
| Warranty | 5 years |
Tube, crown and drive
A tubular motor never touches the tube directly. The crown centers the motor body inside the tube, and the drive transmits torque from the motor shaft to the tube wall. Match both to the tube profile on the bench in front of you.
The Octagonal LT60 70mm Crown and Drive Set fits a 70mm octagonal tube, the profile most North American awning fabricators use on LT60 work. Slide the crown over the motor nose, seat the drive on the shaft, then feed the assembly into the tube until the drive engages. LT50 crowns and drives will not seat on this motor body, so keep the two series separated on a shop that stocks both.
Bracket choice follows the star head. The star profile pins into an LT60 star bracket and takes the reaction torque of the whole assembly, which matters more at 60 Nm than at 10 Nm. Confirm the bracket plate pattern against the shutter box or awning hood you are mounting into before you drill.
Wiring and limit setup
The 660R2 arrives with a 9.84 ft SJTW three-conductor cable at the head. Three conductors cover power and bonding, since the radio inside handles direction rather than a second travel wire. Class I insulation means the ground conductor does real work here, so bond it.
Somfy rates this motor IP 44 and gives it a 4 minute thermal protection window. Cycle the shutter or awning a few times during commissioning and the motor will pause if it reaches that limit. Let it cool rather than forcing another cycle.
Limits are electronic with a 200 turn capacity, and a technician sets them from an RTS remote. Pair the remote first, drive the curtain to the closed position, save it, then drive to the open position and save that. The motor keeps both across a power outage. A curtain that needs more than 200 tube turns from end to end has outgrown this limit capacity, so count turns on a tall shutter before ordering.
Before you order
Four measurements settle the order. Tube inner diameter has to clear 2.37 in. Tube length has to clear 27.56 in of motor plus the crown, the drive and the idler at the far end. Curtain or fabric weight has to sit inside 60 Nm with the drum diameter you plan to use. Turn count from fully closed to fully open has to stay under 200.
Stock the crown and drive with the motor. A 600 Series motor with no crown on the shelf stalls an install for days, and the pairing is specific to the tube profile in front of you. Add the remote the owner will hold, since the motor ships with no handset in the box.
Frequently asked questions
What tube size does the Somfy 660R2 need?
Somfy publishes a minimum tube inner diameter of 2.37 in for reference 1162271, with a motor external diameter of 2.26 in and an unwrapped length of 27.56 in. A 70mm octagonal tube suits it, paired with an LT60 crown and drive set. Measure the inner diameter rather than the outside of the tube.
How much weight will 60 Nm lift?
Lift capacity depends on drum diameter, not torque alone. A larger effective drum radius trades pull force for travel, so the same 60 Nm moves less weight on a 3 in roll than on a 2 in roll. Size the drum with Somfy's LT60 charts, then confirm the finished curtain weight before ordering.
Does the 660R2 need an external RTS receiver?
No. The RTS receiver sits inside the motor head, so a remote or wall switch pairs straight to the motor at 433.420 MHz. Somfy publishes 12 channels and a 164.05 ft open-field range for this reference. Adding TaHoma brings app and voice control without any hardware change at the motor.
Which Somfy motor comes next above 60 Nm?
Somfy offers the 680R2 at 80 Nm and the 6100R2 at 100 Nm on the same LT60 platform. Both keep the 2.37 in minimum tube and the star head, so a step up in torque leaves the tube, crown and bracket choices intact. Move up when the curtain weight approaches the 60 Nm figure.
The Somfy LT60 Altus RTS 660R2 (1162271) gives a fabricator 60 Nm at 14 rpm with the RTS receiver built in, backed by a 5 year Somfy warranty. Pair it with the Octagonal LT60 70mm Crown and Drive Set and the handset that matches the opening count.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
