Tube diameter settles this purchase before torque does. The Somfy Simu T5Hz 35Nm 18rpm 120V (2005135) needs a tube with an inside diameter of 1.85 in or more. The motor body measures 1.77 in across and the head runs 1.97 in, so a 2 in round tube or a 60 mm octagonal tube takes it. Narrower stock stops the job at the bench.
Somfy builds this reference as a 35 Nm motor turning at 18 rpm, with the Simu Hz radio receiver sitting inside the motor head. Dealers reach for it when a mid-size exterior screen or a rolling shutter needs more pull than a 20 Nm T5Hz delivers, and when the owner wants a handheld transmitter rather than a wall switch and a separate receiver box.
The shades a 35 Nm T5Hz drives
Somfy publishes four applications for reference 2005135: awnings, exterior solar screens, interior window coverings, and rolling shutters. That spread covers a wide bench. A 35 Nm motor at 18 rpm moves a loaded exterior screen at a pace an owner reads as brisk, and it carries the extra mass that an aluminum shutter curtain adds over a fabric roller.
Speed matters as much as torque on tall openings. At 18 rpm the T5Hz 2005135 turns half again as fast as the 12 rpm motors in the same torque class, so a 10 ft drop reaches the bottom limit in less time. Installers running a bank of screens on one transmitter channel notice that difference every cycle.
The 50 mm body puts this motor in the Simu T5 class, which shares brackets, crowns and drives with the Somfy LT50 range. A shop that already stocks LT50 hardware fits the T5Hz with parts on the shelf.
Verified specs for the Simu T5Hz 2005135
| Reference | 2005135 |
| Somfy model code | T5HZ02 35/18 120/60 C6FT WHITE |
| Torque / speed | 35 Nm / 18 rpm |
| Power supply | 120 V AC, 60 Hz |
| Rated current | 2.1 A |
| Power consumption | 250 W running, 0.38 W standby |
| Sound level | 56 dB |
| Radio | Simu Hz, 433.420 MHz |
| Radio range | 492.15 ft open field |
| Limit switches | Electronic, 54 turns |
| Head type | Round with pins |
| Cable | 6.56 ft, 3-wire, white |
| Motor diameter | 1.77 in body, 1.97 in head |
| Minimum tube inside diameter | 1.85 in |
| Protection | IP 44, Class I |
| Operating temperature | -4°F to 140°F |
| Applications | Awnings, exterior solar screens, interior window coverings, rolling shutters |
| Warranty | 5 years |
The 0.38 W standby figure comes from the radio board listening for a transmitter. Every Hz motor on a site draws it. A run of twelve screens adds under 5 W of standing load, which a designer can ignore against the 250 W each motor pulls while it runs.
Tube, crown and drive fit
Two parts marry the motor to the tube. The crown locks the motor head end inside the tube and holds the motor against rotation. The drive wheel keys onto the output shaft and turns the tube. Both must match the tube profile, not the motor.
Somfy lists a deep set of T5 and LT50 wheels for this motor class. The Somfy T5/T6 60mm Round Aluminum Drive (9012950) suits 60 mm round tube. For octagonal stock, the Somfy T5/T6 70mm Octagonal Aluminum Drive (9011878) keys into a 70 mm octagonal profile, the common shutter tube in North American shutter boxes. Larger awning tube takes the Somfy Simu T5/T6 85mm Round (Simbac Tube) Drive (9420300).
Measure the inside of the tube, not the outside. A 2 in nominal round tube with a thick wall can fall under the 1.85 in minimum, and the head will bind. Octagonal profiles get measured across the flats.
Brackets and mounting
The head end of the T5Hz carries a round pin pattern that drops into a Simu T5 operator bracket. The Somfy Simu T5 Operator Bracket 80mm x 80mm Square (9520049) is the standard square plate for this motor class, and it bolts to a shutter box cheek or a header angle.
Leave the motor head reachable after the shade hangs. Electronic limits on this motor get set with a transmitter rather than with screwdriver adjusters, so an installer does not need tool access to the head once the shade runs. Service still does. A head buried behind a fixed fascia costs an hour on the first callback.
Support the idler end on a pin or an idler bracket rated for the tube. The motor carries torque, and the idler carries half the curtain weight.
Radio control and pairing
The Hz receiver inside this motor speaks the Simu Hz protocol at 433.420 MHz. Somfy rates the link at 492.15 ft in open field, which drops once walls, foil-faced sheathing, or a steel shutter box sit between transmitter and motor. Plan a site with that attenuation in mind and keep the motor head out of a grounded metal enclosure where you can.
Pairing follows the Hz sequence in the Somfy installation guide for the T5Hz range. An installer puts the motor into programming mode from an already-paired transmitter or from a first-power window, then confirms with a short jog of the tube. Limits get set the same way, by driving the shade to each end and recording the position. The 54-turn electronic capacity covers a long drop without a gearbox change.
The 3-wire cable carries line, neutral and ground. No travelers run to a wall switch, and no control wire leaves the motor, which is the point of a radio motor in a retrofit. A single 120 V branch feeds the head.
Install notes an installer asks about
Cut the tube to the opening, deburr both ends, and dry-fit the crown and drive before the fabric goes on. A drive wheel that needs a mallet will bind the output shaft under load.
Set the drive stop where Somfy calls for one. The Somfy LT50 2.5" Crown (9707026) and the rest of the LT50 crown range seat the head end of the assembly, and a stop screw keeps the wheel from walking along the shaft on a tall drop.
Power the motor before the shade hangs. A bench test on a stand confirms direction, radio reception and limit travel while the assembly still sits at waist height. Correcting a reversed up and down after the brackets go in costs far more than the five minutes a bench test takes.
Order the bracket, the crown and the drive with the motor. A T5Hz arrives as a bare operator, and a shop that waits on a 70 mm drive wheel loses the install day.
FAQ
What tube does the Simu T5Hz 2005135 fit?
Any tube with an inside diameter of 1.85 in or larger. The motor body measures 1.77 in and the head 1.97 in. Common fits are 2 in round tube, 60 mm round and octagonal tube, and 70 mm octagonal shutter tube. Pair the motor with a crown and a drive wheel cut for that exact profile.
How far does the Hz radio reach?
Somfy rates the 433.420 MHz link at 492.15 ft in open field. Real installs come in shorter once walls, metal shutter boxes or foil-faced sheathing sit in the path. Keep the motor head clear of grounded metal enclosures and the link holds across a typical residential footprint.
Does this motor need a separate receiver?
No. The Hz receiver sits inside the motor head, so the only wiring is a 120 V feed on the 3-wire cable. That removes the receiver box, the control wiring to a wall position, and the junction a retrofit would otherwise need behind finished wall surfaces.
Which torque should I order for a rolling shutter?
Torque tracks curtain weight and tube diameter. The 35 Nm 2005135 covers mid-size aluminum shutters and loaded exterior screens at 18 rpm. Lighter interior shades run on the 10 Nm or 20 Nm T5Hz, and a wide shutter above the 35 Nm band moves up to the 50 Nm model.
Order the Somfy Simu T5Hz 35Nm 18rpm 120V (2005135) with its bracket, crown and drive, and the assembly leaves the bench ready to hang.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
