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Last verified: 2026-10-07

Verifiable indicators

Short-time duty (S2) — Somfy Roll Up Wired R28 (Ear Mount): Not published. Wistar motor WSERD30-T · 0.7 Nm · 35 rpm: Not published. A-OK AM25 Battery Powered Electronic Limit DC Motor: Not published.

Rated life — Somfy Roll Up Wired R28 (Ear Mount): Not published. Wistar motor WSERD30-T · 0.7 Nm · 35 rpm: Not published. A-OK AM25 Battery Powered Electronic Limit DC Motor: Not published.

Thermal protection — Somfy Roll Up Wired R28 (Ear Mount): Not published. Wistar motor WSERD30-T · 0.7 Nm · 35 rpm: Not published. A-OK AM25 Battery Powered Electronic Limit DC Motor: Not published.

IP rating — Somfy Roll Up Wired R28 (Ear Mount): IP30^{[3; 2026-10-07]}; Wistar motor WSERD30-T · 0.7 Nm · 35 rpm: IP20^{[1; 2026-10-01]}; A-OK AM25 Battery Powered Electronic Limit DC Motor: IP44^{[2; 2026-09-30]}.

Comparison table
Property	Somfy Roll Up Wired R28 (Ear Mount)Somfy1002833	Wistar motor WSERD30-T · 0.7 Nm · 35 rpmWistar motorWSERD30-T-0.7/35	A-OK AM25 Battery Powered Electronic Limit DC MotorA-OKAM25-1/25-ES-E
Series & variant axes
SeriesDiffers: Roll Up 28 vs WSERD30-T vs AM25	Roll Up 28	WSERD30-T	AM25
Identity & lineage
Series / product lineDiffers: Not published vs WSERD30-T^{[1; 2026-10-01]} vs AM25^{[2; 2026-09-30]}	Not published	WSERD30-T^{[1; 2026-10-01]}	AM25^{[2; 2026-09-30]}
Electrical
Rated voltage	24 V^{[3; 2026-10-07]}	24 V^{[1; 2026-10-01]}	Not published
Power supply type	DC^{[3; 2026-10-07]}	DC^{[1; 2026-10-01]}	Battery^{[2; 2026-09-30]}, DC^{[2; 2026-09-30]}
Rated power inputDiffers: 7.7 W^{[4; 2026-09-30]} vs 12 W^{[1; 2026-10-01]} vs 8.8 W^{[2; 2026-09-30]}	7.7 W^{[4; 2026-09-30]}	12 W^{[1; 2026-10-01]}	8.8 W^{[2; 2026-09-30]}
Standby power	0.407 W^{[4; 2026-10-01]}	Not published	Not published
Rated currentDiffers: Not published vs 0.5 A^{[1; 2026-10-01]} vs 1.2 A^{[2; 2026-09-30]}	Not published	0.5 A^{[1; 2026-10-01]}	1.2 A^{[2; 2026-09-30]}
Drive performance
Rated torqueDiffers: 0.8 Nm^{[3; 2026-10-07]} vs 0.7 Nm^{[1; 2026-10-01]} vs 1 Nm^{[2; 2026-09-30]}	0.8 Nm^{[3; 2026-10-07]}	0.7 Nm^{[1; 2026-10-01]}	1 Nm^{[2; 2026-09-30]}
Rated speedDiffers: 30 rpm^{[3; 2026-10-07]} vs 35 rpm^{[1; 2026-10-01]} vs 25 rpm^{[2; 2026-09-30]}	30 rpm^{[3; 2026-10-07]}	35 rpm^{[1; 2026-10-01]}	25 rpm^{[2; 2026-09-30]}
Dimensions & mounting
Motor diameter	Not published	25 mm^{[1; 2026-10-01]}	Not published
Overall length	Not published	455 mm^{[1; 2026-10-01]}	Not published
Limits & protection
Limit setting	Electronic^{[3; 2026-10-07]}	Not published	Electronic^{[2; 2026-09-30]}
Limit range	60 turns^{[3; 2026-10-07]}	—	Not published
Control & communication
Control protocol	Not published	Not published	Bluetooth LE^{[2; 2026-09-30]}, Matter^{[2; 2026-09-30]}, Proprietary RF^{[2; 2026-09-30]}, Zigbee^{[2; 2026-09-30]}
Max paired transmitters	Not published	15 pcs^{[5; 2026-10-07]}	Not published
Battery & charging
Charging interface	Not applicable	Not applicable	Solar panel^{[2; 2026-10-01]}, USB-C^{[2; 2026-10-01]}
Environment & protection
IP ratingDiffers: IP30^{[3; 2026-10-07]} vs IP20^{[1; 2026-10-01]} vs IP44^{[2; 2026-09-30]}	IP30^{[3; 2026-10-07]}	IP20^{[1; 2026-10-01]}	IP44^{[2; 2026-09-30]}Highest stated
Operating temp. (min)	-10 °C^{[3; 2026-10-07]}	Not published	-10 °C^{[2; 2026-09-30]}
Operating temp. (max)Differs: 85 °C^{[3; 2026-10-07]} vs Not published vs 45 °C^{[2; 2026-09-30]}	85 °C^{[3; 2026-10-07]}Highest stated	Not published	45 °C^{[2; 2026-09-30]}
Noise level	48 dB(A)^{[3; 2026-10-07]}	Not published	Not published
Compliance & declarations
Marks stated by vendor	CE^{[4; 2026-10-01]}	Not published	Not published
Appearance
Colour / finish	Not published	Not published	Yellow^{[2; 2026-10-01]}
Documents	Official datasheet ↗	Request datasheet	Request datasheet

— means no value: the manufacturer does not publish it, it does not apply to this product type, or there is none on record. Value states

Data gaps

Wistar motor WSERD30-T · 0.7 Nm · 35 rpm: Limit range — Not yet collected

Sources

↑Wistar motor manufacturer site (product catalog)wistarmotor.comSeries / product line: Ref: WSERD30-TManufacturer-stated · Observed 2026-10-01 · Retrieved 2026-10-01 · Public web pageUsed for: 16045, 16039, 16029, 16037, 16041, 16025, 16027, 16033, 16043, 16031
↑A-OK Motor manufacturer site (product catalog)a-okmotor.comSeries / product line: AM25 Battery Powered Electronic Limit DC MotorManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-23 · Public web pageUsed for: 2897, 2884, 2885, 2888, 2889, 2882, 2883, 2896, 2895, 2894, 2892, 2893, 9866, 9865, 2886, 2890, 2891, 9867
↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 24V DC [1002833] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 51243, 51244, 51248, 51250, 51246, 51247, 51245, 51251, 51252, 51249
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 7.7 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 4448, 10530, 10531
↑Wistar motor PDF catalogue WSERD30-Twistarmotor.comMax paired transmitters: connect with 15pcs of emitter at most: 15 (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 52452

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Verifiable indicators

Data gaps

Sources