What torque and speed is each rated for?

Rated torque — Somfy Altus® RTS 550R2: 50 Nm; Elero VariEco M NHK · 50 Nm · 14 rpm: 50 Nm. Rated speed — Somfy Altus® RTS 550R2: 14 rpm; Elero VariEco M NHK · 50 Nm · 14 rpm: 14 rpm.

What protocols and control options does each support?

Limit setting — Somfy Altus® RTS 550R2: Electronic; Elero VariEco M NHK · 50 Nm · 14 rpm: Mechanical. Control protocol — Somfy Altus® RTS 550R2: RTS.

Which durability indicators does each publish?

OpenAxia does not rate reliability; the published indicators are: IP rating — Somfy Altus® RTS 550R2: IP44.

Somfy Altus® RTS 550R2 vs Elero VariEco M NHK

Last verified: 2026-10-09

When to choose Somfy Altus® RTS 550R2

For 120 V^{[1; 2026-10-07]} / 60 Hz^{[1; 2026-10-07]} mains.
For the stated supply type: AC mains^{[1; 2026-10-07]}.
For a rated torque of 50 Nm^{[1; 2026-10-07]}.
For a rated speed of 14 rpm^{[1; 2026-10-07]}.

When to choose Elero VariEco M NHK · 50 Nm · 14 rpm

For the stated diameter: 45 mm^{[4; 2026-10-09]}.
For a rated torque of 50 Nm^{[3; 2026-09-23]}.
For a rated speed of 14 rpm^{[3; 2026-09-23]}.
For the stated limit type: Mechanical^{[3; 2026-10-01]}.

Verifiable indicators

Short-time duty (S2) — Somfy Altus® RTS 550R2: Not published. Elero VariEco M NHK · 50 Nm · 14 rpm: Not published.

Rated life — Somfy Altus® RTS 550R2: Not published. Elero VariEco M NHK · 50 Nm · 14 rpm: Not published.

Thermal protection — Somfy Altus® RTS 550R2: Not published. Elero VariEco M NHK · 50 Nm · 14 rpm: Not published.

IP rating — Somfy Altus® RTS 550R2: IP44^{[1; 2026-10-07]}. Elero VariEco M NHK · 50 Nm · 14 rpm: Not published.

Comparison table
Property	Somfy Altus® RTS 550R2Somfy1038170	Elero VariEco M NHK · 50 Nm · 14 rpmElero34 863.0001
Series & variant axes
SeriesDiffers: Altus 50 vs VariEco M NHK	Altus 50	VariEco M NHK
Electrical
Rated voltage	120 V^{[1; 2026-10-07]}	Not published
Mains frequency	60 Hz^{[1; 2026-10-07]}	Not published
Power supply type	AC mains^{[1; 2026-10-07]}	Not published
Rated power input	250 W^{[2; 2026-09-30]}	Not published
Standby power	0 W^{[2; 2026-10-01]}	Not published
Rated current	2.1 A^{[1; 2026-10-07]}	Not published
Cable length	2 m^{[1; 2026-10-07]}	Not published
Drive performance
Rated torque	50 Nm^{[1; 2026-10-07]}	50 Nm^{[3; 2026-09-23]}
Rated speed	14 rpm^{[1; 2026-10-07]}	14 rpm^{[3; 2026-09-23]}
Dimensions & mounting
Motor diameter	Not published	45 mm^{[4; 2026-10-09]}
Fits tube diameter	Not published	≥ 50 mm^{[3; 2026-10-01]}
Limits & protection
Limit settingDiffers: Electronic^{[1; 2026-10-07]} vs Mechanical^{[3; 2026-10-01]}	Electronic^{[1; 2026-10-07]}	Mechanical^{[3; 2026-10-01]}
Limit range	250 turns^{[1; 2026-10-07]}	Not published
Control & communication
Control protocol	RTS^{[2; 2026-09-30]}	Not published
Control interface (as stated)	Not published	Hardwired^{[3; 2026-10-01]}
Radio frequency	433.42 MHz^{[2; 2026-10-01]}	Not published
Radio range	200 m^{[2; 2026-10-01]}	Not published
Max paired transmitters	12 pcs^{[2; 2026-10-01]}	Not published
Environment & protection
IP rating	IP44^{[1; 2026-10-07]}	Not published
Operating temp. (min)	-10 °C^{[1; 2026-10-07]}	Not published
Operating temp. (max)	40 °C^{[1; 2026-10-07]}	Not published
Noise level	55 dB(A)^{[2; 2026-09-30]}	Not published
Application
Applications	Not published	Awning^{[3; 2026-10-01]}, Roller blind^{[3; 2026-10-05]}, Roller shutter^{[3; 2026-10-01]}, Screen^{[3; 2026-10-01]}
Documents	Official datasheet ↗	Request datasheet

Series

Cross-brand alternatives

Wistar motor WSMES0-LED-50/13: 50 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSME50-LED-50/16: 50 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}
Wistar motor WSME50-LED-50/16: 50 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, 120 V^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}
Wistar motor WSME50-50/13: 50 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-01]}
Wistar motor WSME50-50/16: 50 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, 230 V^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}
Wistar motor WSME50-50/16: 50 Nm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, Ø 45 mm^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}, 120 V^{[Wistar motor manufacturer site (product catalog); 2026-10-02]}

Questions and answers

What torque and speed is each rated for?: Rated torque — Somfy Altus® RTS 550R2: 50 Nm; Elero VariEco M NHK · 50 Nm · 14 rpm: 50 Nm. Rated speed — Somfy Altus® RTS 550R2: 14 rpm; Elero VariEco M NHK · 50 Nm · 14 rpm: 14 rpm.
What protocols and control options does each support?: Limit setting — Somfy Altus® RTS 550R2: Electronic; Elero VariEco M NHK · 50 Nm · 14 rpm: Mechanical. Control protocol — Somfy Altus® RTS 550R2: RTS.
Which durability indicators does each publish?: OpenAxia does not rate reliability; the published indicators are: IP rating — Somfy Altus® RTS 550R2: IP44.

Sources

↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 120V AC, 60Hz [1037511] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 51011, 51013, 51012, 51021, 51019, 51020, 51022, 51015, 51016, 51014, 51017, 51018
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 250 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 3682, 10144, 3684, 10141, 10143, 10142, 3680
↑Elero manufacturer site (product catalog)elero.comRated torque: 50 NmManufacturer-stated · Observed 2026-09-23 · Retrieved 2026-09-23 · Public web pageUsed for: 1847, 1848, 26971, 26970, 26966, 26968, 49011, 26967, 26969
↑Tubular diameter derivation tdia-elero-catalog-2026-p67-varieco-melero.com[tdia-elero-catalog-2026-p67-varieco-m] Ø 45 mm from "VariEco M NHK". archive: vendor/elero/aero/catalog_pdf/d3db2f5a3087a18e41569789454c321eaa3e24c3927400842437f18ecca3c54a.pdf p67. elero catalogue 2026 p67, Technical data VariEco M / VariEco M high-speed version / VariEco+ M / VariEco+ M high-speed version / VariEco M NHK: "Min. shaft diameter (mm) 50 … Diameter (mm) 45"Derived (vendor document) · Observed 2026-10-09 · Retrieved 2026-10-09 · Public web pageUsed for: 54576

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Somfy Altus® RTS 550R2 vs Elero VariEco M NHK · 50 Nm · 14 rpm