What supply voltage and frequency does each use?

Rated voltage — Somfy Sonesse® ULTRA 504 A8 DC RTS: 24 V; Somfy Sonesse® ULTRA 504 A8 DC RS485: 24 V. Power supply type — Somfy Sonesse® ULTRA 504 A8 DC RTS: DC; Somfy Sonesse® ULTRA 504 A8 DC RS485: DC.

What torque and speed is each rated for?

Rated torque — Somfy Sonesse® ULTRA 504 A8 DC RTS: 4 Nm; Somfy Sonesse® ULTRA 504 A8 DC RS485: 4 Nm. Rated speed — Somfy Sonesse® ULTRA 504 A8 DC RTS: 25 rpm; Somfy Sonesse® ULTRA 504 A8 DC RS485: 25 rpm.

What protocols and control options does each support?

Limit setting — Somfy Sonesse® ULTRA 504 A8 DC RTS: Electronic; Somfy Sonesse® ULTRA 504 A8 DC RS485: Electronic. Control protocol — Somfy Sonesse® ULTRA 504 A8 DC RTS: RTS; Somfy Sonesse® ULTRA 504 A8 DC RS485: RS-485.

Which durability indicators does each publish?

OpenAxia does not rate reliability; the published indicators are: Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RTS: 5 min; Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min. IP rating — Somfy Sonesse® ULTRA 504 A8 DC RTS: IP20; Somfy Sonesse® ULTRA 504 A8 DC RS485: IP20.

Somfy Sonesse® ULTRA 504 A8 DC: RTS vs RS485 Compared

Last verified: 2026-10-06

When to choose Somfy Sonesse® ULTRA 504 A8 DC RTS

For a supply rated 24 V^{[1; 2026-10-06]}.
For the stated supply type: DC^{[1; 2026-10-06]}.
For a rated torque of 4 Nm^{[1; 2026-10-06]}.
For a rated speed of 25 rpm^{[1; 2026-10-06]}.

When to choose Somfy Sonesse® ULTRA 504 A8 DC RS485

For a supply rated 24 V^{[2; 2026-10-06]}.
For the stated supply type: DC^{[2; 2026-10-06]}.
For a rated torque of 4 Nm^{[2; 2026-10-06]}.
For a rated speed of 25 rpm^{[2; 2026-10-06]}.

Verifiable indicators

Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RTS: 5 min^{[1; 2026-10-06]}; Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min^{[2; 2026-10-06]}.

Rated life — Somfy Sonesse® ULTRA 504 A8 DC RTS: Not published. Somfy Sonesse® ULTRA 504 A8 DC RS485: Not published.

Thermal protection — Somfy Sonesse® ULTRA 504 A8 DC RTS: Not published. Somfy Sonesse® ULTRA 504 A8 DC RS485: Not published.

IP rating — Somfy Sonesse® ULTRA 504 A8 DC RTS: IP20^{[1; 2026-10-06]}; Somfy Sonesse® ULTRA 504 A8 DC RS485: IP20^{[2; 2026-10-06]}.

Comparison table
Property	Somfy Sonesse® ULTRA 504 A8 DC RTSSomfy1134023	Somfy Sonesse® ULTRA 504 A8 DC RS485Somfy1134022
Series & variant axes
Series	Sonesse ULTRA 50	Sonesse ULTRA 50
Control protocolDiffers: RTS (from model name) vs RS-485 (from model name)	RTS (from model name)	RS-485 (from model name)
Power supply	DC	DC
Electrical
Rated voltage	24 V^{[1; 2026-10-06]}	24 V^{[2; 2026-10-06]}
Power supply type	DC^{[1; 2026-10-06]}	DC^{[2; 2026-10-06]}
Rated power input	36 W^{[3; 2026-09-30]}	36 W^{[3; 2026-09-30]}
Standby power	0.48 W^{[3; 2026-10-01]}	0.48 W^{[3; 2026-10-01]}
Rated current	1.5 A^{[1; 2026-10-06]}	1.5 A^{[2; 2026-10-06]}
Cable length	0.25 m^{[1; 2026-10-06]}	0.25 m^{[2; 2026-10-06]}
Drive performance
Rated torque	4 Nm^{[1; 2026-10-06]}	4 Nm^{[2; 2026-10-06]}
Rated speed	25 rpm^{[1; 2026-10-06]}	25 rpm^{[2; 2026-10-06]}
Short-time duty (S2)	5 min^{[1; 2026-10-06]}	5 min^{[2; 2026-10-06]}
Limits & protection
Limit setting	Electronic^{[1; 2026-10-06]}	Electronic^{[2; 2026-10-06]}
Limit range	38 turns^{[1; 2026-10-06]}	38 turns^{[2; 2026-10-06]}
Control & communication
Control protocolDiffers: RTS^{[3; 2026-09-30]} vs RS-485^{[3; 2026-09-30]}	RTS^{[3; 2026-09-30]}	RS-485^{[3; 2026-09-30]}
Radio frequency	433.42 MHz^{[3; 2026-10-01]}	Not published
Radio range	200 m^{[3; 2026-10-01]}	Not published
Environment & protection
IP rating	IP20^{[1; 2026-10-06]}	IP20^{[2; 2026-10-06]}
Operating temp. (min)	0 °C^{[1; 2026-10-06]}	0 °C^{[2; 2026-10-06]}
Operating temp. (max)	60 °C^{[1; 2026-10-06]}	60 °C^{[2; 2026-10-06]}
Noise level	38 dB(A)^{[1; 2026-10-06]}	38 dB(A)^{[2; 2026-10-06]}
View all 7 variants
Documents	Official datasheet ↗	Official datasheet ↗

Same-series variants

Variant axis	Somfy Sonesse® ULTRA 504 A8 DC RTS	Somfy Sonesse® ULTRA 504 A8 DC RS485
Control protocol	RTS (from model name)	RS-485 (from model name)

Questions and answers

What supply voltage and frequency does each use?: Rated voltage — Somfy Sonesse® ULTRA 504 A8 DC RTS: 24 V; Somfy Sonesse® ULTRA 504 A8 DC RS485: 24 V. Power supply type — Somfy Sonesse® ULTRA 504 A8 DC RTS: DC; Somfy Sonesse® ULTRA 504 A8 DC RS485: DC.
What torque and speed is each rated for?: Rated torque — Somfy Sonesse® ULTRA 504 A8 DC RTS: 4 Nm; Somfy Sonesse® ULTRA 504 A8 DC RS485: 4 Nm. Rated speed — Somfy Sonesse® ULTRA 504 A8 DC RTS: 25 rpm; Somfy Sonesse® ULTRA 504 A8 DC RS485: 25 rpm.
What protocols and control options does each support?: Limit setting — Somfy Sonesse® ULTRA 504 A8 DC RTS: Electronic; Somfy Sonesse® ULTRA 504 A8 DC RS485: Electronic. Control protocol — Somfy Sonesse® ULTRA 504 A8 DC RTS: RTS; Somfy Sonesse® ULTRA 504 A8 DC RS485: RS-485.
Which durability indicators does each publish?: OpenAxia does not rate reliability; the published indicators are: Short-time duty (S2) — Somfy Sonesse® ULTRA 504 A8 DC RTS: 5 min; Somfy Sonesse® ULTRA 504 A8 DC RS485: 5 min. IP rating — Somfy Sonesse® ULTRA 504 A8 DC RTS: IP20; Somfy Sonesse® ULTRA 504 A8 DC RS485: IP20.

Sources

↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 24V DC [1134023] (p. 6)Manufacturer-stated · Observed 2026-10-06 · Retrieved 2026-10-06 · Public web pageUsed for: 50228, 50229, 50237, 50235, 50236, 50238, 50239, 50231, 50232, 50230, 50233, 50234, 50240
↑Somfy PDF catalogueservice.somfy.comRated voltage: Voltage Supply: 24V DC [1134022] (p. 1)Manufacturer-stated · Observed 2026-10-06 · Retrieved 2026-10-06 · Public web pageUsed for: 50375, 50376, 50384, 50382, 50383, 50385, 50386, 50378, 50379, 50377, 50380, 50381, 50387
↑Somfy Systems (North America) manufacturer site (product catalog)somfysystems.comRated power input: Consumption during operation 36 WManufacturer-stated · Observed 2026-09-30 · Retrieved 2026-09-30 · Public web pageUsed for: 3532, 3652, 10056, 10125, 3534, 3654, 10054, 10055

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Somfy Sonesse® ULTRA 504 A8 DC RTS vs Somfy Sonesse® ULTRA 504 A8 DC RS485