Tube size settles this order before torque does. The Simu T5Hz 20 Nm needs a tube with an inside diameter of 1.85 in or more, and the head needs a bracket pocket that clears 1.97 in. Measure both. Then read the torque.
Tube and head clearance come first
The T5Hz carries a 50 mm motor body. Somfy publishes a 1.77 in diameter for that body and 1.97 in across the head, with a minimum tube inside diameter of 1.85 in. A 2 in round tube accepts it. A 70 mm octagonal tube accepts it. A 1.5 in tube will not, and no crown recovers that gap.
Installers who skip the head measurement lose a day. The body slides into the tube, the head sits outside it in the bracket, and the bracket pocket has to take the full 1.97 in. Check the pocket on the bracket you already own before you order a second one.
Applications the 20 Nm T5Hz drives
Somfy lists four applications for ref 2006353: awnings, exterior solar screens, interior window coverings and rolling shutters. The 20 Nm rating puts it in the middle of the T5 range. It carries a mid-size lateral arm awning, a tall exterior screen on a commercial west elevation, a residential rolling shutter, and interior roller shades wide enough that a 10 Nm motor would strain.
Speed matters as much as torque on a screen. At 12 rpm the T5Hz moves slower than the 18 rpm T5 motors, which suits a heavy fabric and a long drop. A deep awning projection travels in a controlled run instead of a snap.
Verified specs
| Torque / speed | 20 Nm / 12 rpm |
| Power supply | 120V AC, 60 Hz |
| Rated current | 1.1 A |
| Power consumption | 130 W running, 0.38 W standby |
| Control | Simu Hz radio, 433.420 MHz, built in |
| Radio range | 492 ft open field |
| Limit switches | Electronic, 36 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 |
| Sound level | 53 dB |
| Protection | IP 44, Class I |
| Operating temperature | -4°F to 140°F |
| Warranty | 5 years |
Two figures in that table change a quote. The 0.38 W standby draw lets a dealer put forty radio motors on one building without a panel schedule argument. The IP 44 rating and the -4°F floor cover an exterior awning through a northern winter.
Crowns, drives and brackets that fit
The Somfy Simu T5Hz 20Nm 12rpm 120V (2006353) ships as a bare motor. Four parts turn it into a working assembly: a bracket, a crown, a drive, and the tube itself.
Somfy names the Simu T5 Operator Bracket 80mm x 80mm Square (9520049) for this motor class. The square plate bolts to a header or a side jamb and seats the pin head. For the tube end, match the drive to the tube profile you have: the T5/T6 60mm Round Aluminum Drive (9012950) for 60 mm round tube, the T5/T6 70mm Octagonal Aluminum Drive (9011878) for 70 mm octagonal, and the Simu T5/T6 85mm Round Simbac Tube Drive (9420300) for an 85 mm Simbac tube.
Somfy also lists LT50 crowns and drives from 2 in through DS 85 mm against the T5 body, which widens the tube options on a retrofit. Order the crown and the drive as a pair. A drive without its matching crown leaves the motor end unsupported inside the tube, and the assembly wobbles under load.
Radio control and limit setting
The receiver sits inside the motor on 433.420 MHz. Nothing mounts in the header, nothing needs a receiver box, and the cable run carries power alone. Three conductors leave the head: line, neutral and ground. An electrician wires it to a 120V circuit and stops there.
Somfy publishes 492 ft of open-field range for this ref. Walls and metal headers cut that number, so plan a transmitter position inside the room rather than two floors down. Simu Hz transmitters pair to the motor through its own programming sequence. Hz and RTS run on the same 433 MHz band and do not cross-pair, so an RTS remote will not drive a T5Hz motor. Keep the two families separate when you spec a mixed building.
The T5Hz holds electronic limits with a 36-turn capacity. That number caps the tube revolutions between the two stops, and a tall exterior screen on a small tube can reach it. Count the turns on a 16 ft drop before you commit the motor.
Electronic limits hold their positions through a power loss and reset through the transmitter instead of a screwdriver at the head. A dealer who commissions a row of shades values that: the motor stays in the tube while the stops move. Set the upper stop with the fabric under light tension and leave a half turn of travel at the bottom so the hem bar never drives into the sill.
The motor runs at 53 dB. On an interior roller shade in a bedroom that reads as a soft hum. For a quieter interior spec, Somfy builds the Sonesse line, and the T5Hz earns its place on exterior work where 53 dB disappears outdoors.
Ordering the T5Hz 20 Nm
Buy the motor, the bracket and the crown and drive set in one order. The Simu T5Hz 20 Nm (2006353) covers the awning, screen and shutter work that a 15 Nm motor cannot hold and a 30 Nm motor overbuilds. Pair it with the 9520049 bracket, pick the drive that matches your tube, and add a Simu Hz transmitter for the control side.
Somfy backs the motor for five years. Dealers who standardize on one torque per application spend less time matching parts and more time hanging fabric.
FAQ
What tube does the Simu T5Hz 20 Nm fit?
Somfy publishes a minimum tube inside diameter of 1.85 in for this motor. The body measures 1.77 in and the head 1.97 in. A 2 in round tube, a 70 mm octagonal tube and an 85 mm Simbac tube all accept it with the matching Somfy drive. Match the crown to the same tube profile.
Does the T5Hz need a separate radio receiver?
No. The Simu Hz receiver sits inside the motor on 433.420 MHz, so the installation needs power alone. Three conductors leave the head for line, neutral and ground. Somfy publishes 492 ft of open-field range, and Simu Hz transmitters pair to the motor through its own programming sequence.
Will an RTS remote operate a Simu T5Hz motor?
No. Simu Hz and Somfy RTS share the 433 MHz band and use separate protocols, so they do not cross-pair. Order a Simu Hz transmitter for a T5Hz motor. For an RTS building, Somfy builds RTS motors across the Altus, Sonesse and Sunea ranges.
How many tube turns do the electronic limits allow?
The T5Hz holds 36 turns between its two electronic stops. Count the revolutions your drop needs on the tube diameter you plan to use, since a long screen on a small tube can reach that cap. Electronic limits survive a power loss and reset from the transmitter.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
