What torque and speed is each rated for?

Rated torque — Somfy Altus® RTS 540R2: 40 Nm; Elero VariEco L NHK · 40 Nm · 14 rpm: 40 Nm. Rated speed — Somfy Altus® RTS 540R2: 14 rpm; Elero VariEco L NHK · 40 Nm · 14 rpm: 14 rpm.

What protocols and control options does each support?

Limit setting — Somfy Altus® RTS 540R2: Electronic; Elero VariEco L NHK · 40 Nm · 14 rpm: Mechanical. Control protocol — Somfy Altus® RTS 540R2: RTS.

Which durability indicators does each publish?

OpenAxia does not rate reliability; the published indicators are: IP rating — Somfy Altus® RTS 540R2: IP44.

Somfy Altus® RTS 540R2 vs Elero VariEco L NHK

Last verified: 2026-10-09

When to choose Somfy Altus® RTS 540R2

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 40 Nm^{[1; 2026-10-07]}.
For a rated speed of 14 rpm^{[1; 2026-10-07]}.

When to choose Elero VariEco L NHK · 40 Nm · 14 rpm

For the stated diameter: 58 mm^{[4; 2026-10-09]}.
For a rated torque of 40 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 540R2: Not published. Elero VariEco L NHK · 40 Nm · 14 rpm: Not published.

Rated life — Somfy Altus® RTS 540R2: Not published. Elero VariEco L NHK · 40 Nm · 14 rpm: Not published.

Thermal protection — Somfy Altus® RTS 540R2: Not published. Elero VariEco L NHK · 40 Nm · 14 rpm: Not published.

IP rating — Somfy Altus® RTS 540R2: IP44^{[1; 2026-10-07]}. Elero VariEco L NHK · 40 Nm · 14 rpm: Not published.

Comparison table
Property	Somfy Altus® RTS 540R2Somfy1240556	Elero VariEco L NHK · 40 Nm · 14 rpmElero36 925.0002
Series & variant axes
SeriesDiffers: Altus 50 vs VariEco L NHK	Altus 50	VariEco L 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	210 W^{[2; 2026-09-30]}	Not published
Standby power	0.37 W^{[2; 2026-10-01]}	Not published
Rated current	1.8 A^{[1; 2026-10-07]}	Not published
Cable length	2 m^{[1; 2026-10-07]}	Not published
Drive performance
Rated torque	40 Nm^{[1; 2026-10-07]}	40 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	58 mm^{[4; 2026-10-09]}
Fits tube diameter	Not published	≥ 63 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
Application
Applications	Not published	Awning^{[3; 2026-10-01]}, Roller shutter^{[3; 2026-10-01]}
Documents	Official datasheet ↗	Request datasheet

Series

Cross-brand alternatives

Becker L50-17-M04: 50 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 58 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker L50-17-M05: 50 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 58 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker L50-17-C12 PLUS: 50 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 58 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker L50-17-C16 PLUS: 50 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 58 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker L50-17-E12: 50 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 58 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}
Becker L50-17-E16: 50 Nm^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}, Ø 58 mm^{[Becker-Antriebe product centre (product catalog); 2026-10-01]}, 230 V^{[Becker-Antriebe GmbH PDF catalogue Gesamtkatalog__4995_800_000_0__Einzelseiten_D.pdf; 2026-10-03]}

Questions and answers

What torque and speed is each rated for?: Rated torque — Somfy Altus® RTS 540R2: 40 Nm; Elero VariEco L NHK · 40 Nm · 14 rpm: 40 Nm. Rated speed — Somfy Altus® RTS 540R2: 14 rpm; Elero VariEco L NHK · 40 Nm · 14 rpm: 14 rpm.
What protocols and control options does each support?: Limit setting — Somfy Altus® RTS 540R2: Electronic; Elero VariEco L NHK · 40 Nm · 14 rpm: Mechanical. Control protocol — Somfy Altus® RTS 540R2: RTS.
Which durability indicators does each publish?: OpenAxia does not rate reliability; the published indicators are: IP rating — Somfy Altus® RTS 540R2: IP44.

Sources

↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 120V AC, 60Hz [1037510] (p. 1)Manufacturer-stated · Observed 2026-10-07 · Retrieved 2026-10-06 · Public web pageUsed for: 50999, 51001, 51000, 51009, 51007, 51008, 51010, 51003, 51004, 51002, 51005, 51006
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 210 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 4176, 10428, 4178, 10425, 10427, 10426
↑Elero manufacturer site (product catalog)elero.comRated torque: 40 NmManufacturer-stated · Observed 2026-09-23 · Retrieved 2026-09-23 · Public web pageUsed for: 1771, 1772, 26475, 26474, 26471, 26472, 26473
↑Tubular diameter derivation tdia-elero-catalog-2026-p95-varieco-lelero.com[tdia-elero-catalog-2026-p95-varieco-l] Ø 58 mm from "VariEco L NHK". archive: vendor/elero/aero/catalog_pdf/d3db2f5a3087a18e41569789454c321eaa3e24c3927400842437f18ecca3c54a.pdf p95. elero catalogue 2026 p95, Technical data VariEco L RH / VariEco L RH High-speed version / VariEco L NHK: "Min. shaft diameter (mm) 63 … Diameter (mm) 58"Derived (vendor document) · Observed 2026-10-09 · Retrieved 2026-10-09 · Public web pageUsed for: 54558

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Somfy Altus® RTS 540R2 vs Elero VariEco L NHK · 40 Nm · 14 rpm