Installers reach for a battery motor when the window sits far from power and the wall stays closed. The Somfy Sonesse ULTRA 30 WireFree Zigbee (1241752) answers that job for interior roller shades. It carries a 12V lithium-ion cell, joins a Zigbee 3.0 network, and reports shade position back to the hub. No conduit. No transformer.
Shades this motor lifts
Somfy rates the 1241752 at 2 Nm, near 17.7 in-lb, turning the tube at 20 rpm. That torque covers interior roller shades in the sizes a bedroom, office, or conference room asks for. Somfy lists interior blinds and shades as the application, and the IP 20 rating keeps the motor in dry interior spaces. An exterior screen or an awning needs a different Somfy family, and the Sunea and Maestria lines cover that ground.
Weight matters on a battery job. Somfy publishes the motor at 1.68 lb, so a standard interior bracket set carries it without extra reinforcement. Fabric weight, tube diameter, and roll direction decide the rest of the torque question. Estimate the finished roll before ordering, since a heavy blackout fabric on a wide opening climbs past 2 Nm faster than most people expect.
Verified specs from Somfy's published record
Every figure below comes from Somfy's e-catalog entry for 1241752. Somfy's number wins wherever a store listing disagrees.
| Torque | 2 Nm (17.7 in-lb) |
| Speed | 20 rpm |
| Power supply | 12V DC, rechargeable lithium-ion |
| Rated current | 1.25 A |
| Consumption in operation | 15 W |
| Consumption in standby | 0.26 W |
| Control protocol | Zigbee 3.0, two-way |
| Radio frequency | 2.450 GHz |
| Range, open field | 262.48 ft |
| Noise level | 42 dB |
| Protection index | IP 20, interior only |
| Insulation class | Class III |
| Operating temperature | 32 to 140 °F |
| Storage temperature | -4 to 140 °F |
| Minimum tube inside diameter | 1.14 in |
| Head type | Round |
| Limit switch capacity | 80 turns |
| Limit repeatability | +/- 8 |
| Weight | 1.68 lb |
| Warranty | 5 years |
Source: Somfy Pro e-catalog, product 1241752, Sonesse ULTRA 30 WireFree Zigbee (Li-ion).
Tube fit, crown, and drive
The 1.14 in minimum tube inside diameter sets the floor. Any tube tighter than that will not take the motor, and no adapter fixes it. Above that floor, the crown and drive pair decides the match, because each tube profile has its own keyway and wall thickness.
Two Somfy kits cover the common RollEase tubes. The RollEase 1.5" Crown & Drive (9020674) handles the 1.5 in tube that most residential roller shades use. For a wider opening on a 2 in tube, order the Sonesse 30 WireFree and Ultra Crown & Drive Kit for RollEase 2" Tubes (9021017), which Somfy builds for both the ST30WF and ST30UWF heads. Match the kit to the tube you already have rather than the other way around.
One caution on the store's compatibility list for this SKU: it names a Sonesse 40mm Louvolite crown and drive (9020675). That part belongs to the 40mm motor family. Leave it off a 30mm order.
Brackets and mounting plates
The round head on this motor drops into a Somfy or RollEase interior bracket. The RollEase SkyLine Bracket Set, 2 in Projection (9017910) gives a clean ceiling or wall mount with enough clearance for a 2 in roll. Shops standardizing on RollEase SkyLine or ZMC XL hardware add the Sonesse 30 Motor Bracket Adapter Plate in white (9016378) so the Somfy head seats in the bracket they already stock.
Plan the charging side of the bracket before you cut the tube. A WireFree motor needs the charge port reachable after install, and a tight pocket with no service gap turns a five minute recharge into a teardown.
Zigbee control and TaHoma pairing
Zigbee 3.0 gives this motor two-way communication, so the hub knows where the shade sits instead of guessing from the last command it sent. Somfy publishes 2.450 GHz and 262.48 ft of open-field range. Walls, metal studs, and glass coatings shorten that figure, and a Zigbee mesh recovers most of it once a few mains-powered nodes join the network.
Pair the motor through the TaHoma pro app on a TaHoma hub that supports Zigbee. The app handles limits, group assignment, and scene membership, and it carries firmware updates to the motor. RTS remotes will not drive this SKU. The receiver inside the head speaks Zigbee alone, so a Situo or DecoFlex control belongs on an RTS motor instead.
Charging and first-run setup
Somfy quotes one recharge per year under its stated test conditions, which assumes a typical residential cycle count rather than a lobby shade running six times a day. Order the Sonesse ULTRA 30 WireFree Plug-in Charger (9025166) with the motor. Charger and cable heads changed across motor generations, so confirm the connector on the motor you receive before you commit to a cable run.
The limit switch holds 80 turns of travel with a stated repeatability of +/- 8, which covers tall residential and light commercial drops. Set limits with the shade hung and the fabric rolled the direction it will run, not on a bench. A limit set on a bare tube drifts once fabric thickness changes the effective roll diameter.
For a first install, charge the cell to full before you set limits. A motor near the bottom of its charge can slow enough to make a limit look wrong when the battery is the real story.
The Sonesse ULTRA 30 WireFree Zigbee (1241752) ships as a motor. Add the crown and drive for your tube, the bracket set, and the charger in the same order, and the job goes in without a second shipment. Somfy backs the motor for 5 years.
Frequently asked questions
What size tube does the Sonesse ULTRA 30 WireFree Zigbee need?
Somfy publishes a minimum tube inside diameter of 1.14 in for the 1241752. Anything smaller will not accept the motor. Above that floor, the crown and drive kit sets the real match, since each tube profile has its own keyway. Somfy offers kits for RollEase 1.5 in and 2 in tubes.
Can RTS remotes control this motor?
No. The 1241752 carries a Zigbee 3.0 receiver at 2.450 GHz and answers Zigbee commands alone. Pair it through the TaHoma pro app on a Zigbee-capable TaHoma hub. Somfy builds an RTS version of the same motor for jobs that already run Situo or DecoFlex controls.
How often does the battery need charging?
Somfy states one recharge per year under its published test conditions. Real intervals track cycle count, fabric weight, and tube diameter, so a shade running several times a day lands well short of a year. The plug-in charger 9025166 handles routine top-ups.
Is this motor rated for exterior shades?
No. Somfy rates the 1241752 at IP 20 and lists interior blinds and shades as its application. Operating temperature runs 32 to 140 °F. Exterior screens and awnings call for a sealed Somfy motor such as the Sunea or Maestria families, which carry higher IP ratings.
Shade Motors Direct is an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
