Short answer: The Somfy LED RTS 24V DC Receiver (1870872) puts 24V LED lighting on the same RTS remote that runs your awning, pergola or shades. It drives four dimmable 100 W zones, or one RGB full-color zone plus one single-color zone, for up to 400 W per receiver. A Situo Variation remote adds step-by-step dimming and color control.
Four lighting zones on one RTS remote
The Somfy LED RTS 24V DC Receiver (1870872) is a radio receiver for low-voltage LED lighting. It sits between a 24V DC power supply and your LED strips, listens for Radio Technology Somfy commands at 433.420 MHz, and switches and dims each output on command. Somfy built it for outdoor lighting on awnings and pergolas. The IP 65 housing fits that job.
Control is the draw for most buyers. A homeowner who already owns a Somfy RTS remote for a motorized awning or louvered pergola can put the lights on a spare channel and retire the second remote that came with an off-the-shelf LED kit. Installers like the zone count, since one receiver covers four separate light runs on a deck, patio or pergola frame.
Four single-color zones or RGB plus one
Somfy lets you program the receiver in one of two modes:
- Four independent dimmable outputs. Each output carries up to 100 W of single-color LED lighting. A typical layout gives the awning front bar one zone and spreads the other three across pergola beams.
- RGB + 1. Three outputs combine into one full-color RGB zone, and the fourth stays a separate dimmable single-color zone. The RGB zone adds the mood modes Somfy lists: auto dimming, flashing, automatic color change, and flashing with color change, with adjustable speed, color and brightness.
Both modes support a favorite MY position, so one press brings the lights back to a saved level. Settle the mode before you buy strip. A four-zone job calls for single-color 24V strip on each output, while an RGB+1 job needs RGB strip on the color zone.
Verified LED RTS receiver specs
| Somfy reference | 1870872, LED RTS 24V Receiver 4 Zone |
| Control | RTS radio, 433.420 MHz, built-in antenna plus optional remote antenna |
| Output modes | 4 dimmable outputs, or RGB + 1 |
| Load per output | 100 W, up to 4.2 A |
| Total LED load | Up to 400 W per receiver |
| Power supply | 24V DC (22.8 V to 25.2 V) |
| Standby consumption | 0 W |
| Protection index | IP 65 |
| Insulation class | Class III |
| Operating temperature | 14°F to 140°F (-10°C to 60°C) |
| Dimensions | 7.28 x 3.9 x 2.24 in (185 x 99 x 57 mm) |
| Finish | White |
| Warranty | 5 years |
The figures above come from Somfy's e-catalog entry for ref 1870872 and Somfy's LED RTS 24V DC Receiver spec sheet (D-0130).
Power supply and wiring fitment
The receiver runs on 24V DC, and Somfy publishes a 22.8 V to 25.2 V input window. Plan the supply around the LED load. At full load each output draws up to 4.2 A, so a four-zone layout near 400 W needs a supply rated for the total wattage of your strips with room to spare. A small plug-in adapter sized for a single shade motor will not carry that load.
Match the supply to your strip wattage, keep the strips at 24V to match the receiver, and confirm the terminal layout against Somfy's 24V DC LED Receiver Instructions before you land a wire. You can find the receiver documents in our Somfy spec library.
Mounting is flexible. The IP 65 rating lets the receiver sit outdoors under an awning hood or along a pergola beam. If the unit ends up inside an aluminum frame, Somfy offers the optional remote antenna to keep radio reception strong.
Remotes that pair with the receiver
Somfy states that a standard Somfy RTS transmitter switches and dims the outputs. The Somfy Situo 5 Channel RTS Pure Remote (1870575) gives you five channels, enough for an awning, a pergola roof and three light zones from one handset.
For finer control, Somfy names the Situo Variation. The Somfy Situo 5 Variation RTS Pure II Remote (1811612) adds a scroll wheel for incremental light level and color adjustment. It is the natural partner for an RGB+1 setup, where you will want to fine-tune color as well as brightness.
Program the receiver with the steps in Somfy's 24V DC LED Receiver Instructions. The add-a-transmitter sequence on a lighting receiver can differ from a shade motor, so follow the receiver sheet rather than a motor guide. Our guide to Somfy RTS receivers for wired motors, pergolas and LED lights shows where the 1870872 sits in the wider receiver range.
Pergola and awning applications
Somfy lists awnings as the receiver's application and names the Somfy Pergola Tilt 24V 150mm Linear Motor (1230032) as a compatible product, which puts it on louvered pergolas too. On a bioclimatic pergola, the tilt motor runs from a Somfy pergola RTS receiver and the lights run from the 1870872. Both answer to the same RTS remote on separate channels, so one handset tilts the louvers and dims the beam lighting.
A single awning with plug-in LED bars has a simpler route. Somfy's RTS 24V Dimming LED Control (2320001) is a plug-in control built for awning light bars, and our Somfy LED awning light kit guide walks through that setup. The 1870872 earns its place on jobs that need four separate zones or RGB color from one control.
Order the Somfy LED RTS 24V DC Receiver (1870872) together with a 24V DC supply sized for your strips and the RTS remote you plan to use. Somfy backs the receiver with its 5-year warranty. To compare it with the motor and pergola receivers, browse our Somfy receivers and interfaces.
Sources: Somfy Pro e-catalog, ref 1870872; somfysystems.com product page, ref 1870872; Somfy LED RTS 24V DC Receiver Spec Sheet (D-0130).
FAQ
Can the Somfy LED RTS receiver dim LED lights?
Yes. In four-zone mode each of the four outputs dims on its own, and in RGB+1 mode both the color zone and the single-color zone dim. A standard Somfy RTS remote controls the light level, and the Situo Variation adds incremental adjustment with its scroll wheel. A favorite MY position stores the level you use most.
How much LED lighting can the 1870872 run?
Somfy rates each output at 100 W, with a maximum of 4.2 A per output, for up to 400 W of LED lighting per receiver. The receiver runs on 24V DC within a 22.8 V to 25.2 V window. Size your 24V DC power supply for the total wattage of the strips you connect.
Does the LED RTS receiver work with RGB color strips?
Yes. Program it in RGB+1 mode and three outputs combine into one full-color RGB zone while the fourth stays a separate single-color zone. The RGB zone adds Somfy's mood modes: auto dimming, flashing, automatic color change, and flashing with color change. Speed, color and brightness adjust within those modes.
Can I mount the receiver outdoors on a pergola?
Yes. Somfy rates the 1870872 at IP 65 with an operating range of 14°F to 140°F, so it suits awning and pergola installs. The housing measures 7.28 x 3.9 x 2.24 in. A built-in antenna handles reception, and Somfy offers an optional remote antenna for receivers mounted inside metal pergola frames.
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