Somfy Roll Up 24 WireFree RTS Battery Motor Fit Guide

Somfy publishes a minimum internal tube diameter of 0.87 in for this motor. That is the smallest figure in the range, and it is the reason the Somfy Roll Up 24 WireFree RTS Li-ion (1240278) goes into openings that turn away every other tubular motor.

Somfy names the reference Roll Up 24 WireFree RTS (Li-ion) and lists it for interior blinds and shades, including roller and solar shades, Roman shades, woven shades, and horizontal blinds. The battery sits inside, so nothing runs to the opening.

Point five five newton metres is a real limit

Torque is 0.55 Nm, which suits a light fabric on a narrow opening. A transom, a sidelight, a small kitchen window, a stack of woven shades in a hallway.

Go past that and the motor is the wrong choice rather than a slow one. A wide blackout panel on a 2 in tube belongs on a Sonesse 28 or a Roll Up 28, and the fabricator's weight table is what settles it. Fabric weight, width, and the roll diameter all pull on the same number.

The upside of a small motor is where it fits. At 1.34 in across and 18.62 in long it disappears into a tube that would not take a 28 mm body, and at 0.77 lb it adds almost nothing to what the brackets carry.

Verified specifications

Figures come from Somfy's published product record for 1240278.

Thirty eight rpm, and what that means in the room

This is the fastest motor in Somfy's WireFree range. A short shade on a small tube clears its travel in seconds, which is what a client expects from a window they walk past rather than sit under.

Somfy publishes 60 dB for the motor. That is higher than the 44 dB of a Sonesse 28 and higher than the 54 dB of a Roll Up 28, and speed is the reason. The run is brief, so the sound arrives as a short burr rather than a sustained hum.

Weigh that where it matters. A row of transoms in a hallway or an office is a good fit. A bedside window in a nursery is the case to move to a slower, quieter motor instead.

Crown and drive for the 1.125 inch tube

The crown centers the motor inside the tube and the drive hands rotation to the tube wall. On a motor this small the pairing is specific rather than interchangeable.

The part built for it is the Somfy R24 Crown and Drive for Rollease 1.125 in (28 mm) Kit (9025712). That kit carries the R24 name because the hardware from the 28 mm and 40 mm motor families does not fit a 24 mm body.

Measure the tube's inside diameter against the 0.87 in minimum before ordering. On a narrow tube a heavy wall eats the clearance, and the difference between a fit and a return is a fraction of an inch.

Charging, and planning for it

The cell is embedded and rechargeable, so a shade goes back to service by charging rather than by swapping batteries. Confirm the charging accessory against the connector on the motor you receive, since Somfy's WireFree range has used more than one charging arrangement across generations.

Plan access to the head before the fabric goes on. A motor sealed into a closed pocket with no service panel turns a routine recharge into a demolition job, and that decision gets made at the bracket stage rather than at the first recharge.

Standby draw is 0.255 W, which is what the receiver costs while it waits for a command. Cold shortens any battery interval, so a shade on an unheated stairwell or a sunroom transom draws down sooner than one in a conditioned room.

Control and adding an app later

The RTS receiver is inside the motor and it remembers 12 channels, so a handheld and a wall control can share the same shade. A Somfy Situo 1 Channel RTS Pure Remote (1870571) sets the limits and stays with the owner.

A room with several small shades takes the Somfy Situo 5 Channel RTS Pure Remote (1870575), which addresses each one and holds a group channel for the bank. A row of transoms wants that group channel.

App and voice control arrive later through a Somfy RTS hub such as the Somfy TaHoma Beecon RTS Interface (1811731). The shade hardware stays as installed and the handheld keeps working alongside the app.

Ordering

Confirm the tube's inside diameter clears 0.87 in and check the fabric weight against 0.55 Nm, then order the Roll Up 24 WireFree RTS (1240278) with the R24 crown and drive kit and one RTS transmitter. Plan physical access to the motor head for charging. Somfy covers the motor for 5 years.

Questions we get on this motor

What size shade will 0.55 Nm lift?

Torque covers the load rather than a fixed width, and fabric weight, shade width, and roll diameter all pull on it. Somfy positions this motor for lightweight interior shades on narrow openings such as transoms and sidelights. A wide or heavy panel belongs on a Roll Up 28 or a Sonesse 28, and the fabricator's weight table settles the choice.

What tube does the Roll Up 24 fit?

Somfy publishes a minimum internal diameter of 0.87 in against a motor body of 1.34 in overall. The matching hardware is the R24 crown and drive kit for a 1.125 in Rollease tube. Hardware from the 28 mm and 40 mm families does not fit this motor.

Why is this motor louder than other battery motors?

Speed. Somfy publishes 38 rpm here against 20 rpm on a Roll Up 28 and 28 rpm on a Sonesse 28, and the published 60 dB reflects that pace. The run is short on a small shade, so the noise is brief. In a bedroom, a slower and quieter motor is the better specification.

Does it need any wiring at the window?

No. The lithium-ion cell sits inside the motor and the RTS receiver handles control, so nothing runs to the opening. That is what makes it work on a retrofit where no power reaches the head, and it is why access for recharging has to be planned at the bracket stage.

Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.