Somfy RTS Dry Contact Interface Single Channel (1810493)
Somfy RTS Dry Contact Interface Single Channel (1810493)
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Somfy RTS Dry Contact Interface -- connect any relay-based automation system to Somfy RTS motors
The RTS Dry Contact Interface (1810493) is a single-channel Somfy RTS transmitter wired to contact closures instead of buttons. When a relay, keypad or switch closes the Up, Down or Stop/My input to the common lead, the interface sends that command by radio on 433.420 MHz to every RTS motor paired to it. It runs on a 3V CR2430 lithium battery and reaches about 65 ft in good conditions, so integrators can place it near the control panel and skip running wire to each shade.
Benefits
- Lets Crestron, Control4, Savant, Lutron or any system with relay outputs drive Somfy RTS motors
- Also works with plain wall buttons or keypads wired to the three input leads
- Battery powered, so it needs no power supply at the mounting spot
- Pairs like any Somfy RTS remote, with no special software
- Works with every Somfy RTS motor and receiver: shades, draperies, awnings, screens and rolling shutters
- Covered by Somfy's 5-year warranty
Specifications
| Control | Dry contact inputs to RTS radio |
| Radio Frequency | 433.420 MHz |
| Range | 65 ft (optimal conditions) |
| Channels | 1 (one motor or a group paired to the same channel) |
| Inputs | Up, Down, Stop/My, each closed to a common lead |
| Wire leads | Green = common, White = Up, Black = Down, Red = Stop/My |
| Power | 3V CR2430 lithium battery (included; spare 9012091) |
| Dimensions | 5.91 in L x 3.94 in W x 2.36 in H |
| IP rating | IP 20 (indoor) |
| Insulation class | Class II |
| Operating temperature | 41 to 140 F |
| Color | White |
| Warranty | 5 years |
Compatible with: all Somfy RTS motors and RTS receivers, and any automation controller, relay module or momentary switch that provides dry contact closures. For 16 or more channels controlled over RS232, RS485 or IR, see the URTSI II (1810872).
Official Somfy documentation
- RTS Dry Contact Interface – Install Guide (PDF)
- RTS Dry Contact Interface – Wiring Diagram (PDF)
- RTS Dry Contact Interface – Somfy Pro Product Page
Sold by ShadeMotorsDirect -- an authorized source for genuine Somfy motorized window shade, blind, and drapery parts.
Common questions
What does the RTS Dry Contact Interface do?
Part 1810493 turns contact closures into Somfy RTS radio commands. Close the Up, Down or Stop/My input to the common lead and the interface sends that command on 433.420 MHz to every RTS motor paired to it.
Which automation systems can use it?
Any system with dry contact relay outputs, including Crestron, Control4, Savant and Lutron, plus standalone relay modules. You can also wire plain momentary wall buttons or a keypad straight to the leads.
How do I wire it?
It has four leads. Green is common, white is Up, black is Down and red is Stop/My. Each relay output closes one colored lead to green. Somfy's wiring diagram, linked above, shows the connection to a third-party relay.
How many shades can one interface control?
It is a single-channel transmitter. Every motor you pair to it moves together, so one interface can run one shade or a whole group. For separate control of many groups, use one interface per group or the 16-channel URTSI II (1810872).
Does it need power at the install location?
No. It runs on a 3V CR2430 lithium battery, included in the box. The spare battery is Somfy part 9012091.
How do I pair it with my motor?
Put the RTS motor into programming mode using an already paired remote, then press the programming button on the interface. The motor jogs to confirm, and the interface is added to its memory like any other Somfy remote.
Couldn't load pickup availability
Replace a failed receiver or add Somfy radio control to new equipment.
123- 1Wire leads Connect to your dry contact device.
- 2Cable gland Seals where the cable enters the box.
- 3Cover screws Remove them to open the box.
Replacing one
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1
Note the wiring
Photograph the old receiver's connections, then cut power.
-
2
Swap it
Wire the RTS Dry Contact Interface Single Channel the same way.
-
3
Pair and test
Pair your remote or system to it and test each channel.
Tell us what you want to control. We'll confirm the right receiver before you order. Ask us
Starting new
-
1
Wire it
Connect it to power and to the device or system it controls.
-
2
Pair it
Pair your remote or system to it, the same way you add an RTS motor.
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3
Test each channel
Run each channel and check the right device responds.
Planning a new install? Send us the window size and a photo. We'll build the parts list with you. Ask us
Somfy backs the RTS Dry Contact Interface Single Channel for 5 years. We handle the claim.
Somfy warranty on the RTS Dry Contact Interface Single Channel, part 1810493.
- What Somfy covers
- Defects in materials and workmanship, for 5 years from purchase.
- If it fails
- Email us your order number. We arrange the replacement with Somfy.
- Where it comes from
- ShadeMotorsDirect is an authorized Somfy distributor. You get the US version, new in Somfy packaging.
- Returns
- Unopened items in original packaging. Ask us for an RA number before you ship.
- Questions
- Call or chat, 8:00 AM - 7:30 PM ET.
How this motor compares
Verified Somfy specs for this motor and its closest alternatives.
| Specification | You're viewing
Somfy RTS Dry Contact Interface Single Channel (1810493)
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Somfy Universal RTS Interface II (URTSI II) 16 Channel (1810872)
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Somfy TaHoma Beecon RTS Interface (1811731)
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|---|---|---|---|
| Price | |||
| Control | Dry contact to RTS | RS232/RS485/IR to RTS | WiFi to RTS |
| What's different | The product on this page | Same size, RS232/RS485/IR to RTS control | Same size, WiFi to RTS control |
| Buy | Currently viewing | View details | View details |
