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September 08, 2026 4 min read
Installation and operation instructions for the ABB-free@home Dimmer Switch, 2-Wire (ABDS31xx).
Installation and operation instructions for the ABB-free@home™ Dimmer Switch, 2-Wire (model ABDS31xx) — a wireless dimmer that controls dimmable lighting loads without requiring a neutral wire, connecting to the ABB-free@home smart home system.
The ABB Dimmer Switch, 2-wire controls dimmable lights via a wireless control unit that connects it to the ABB-free@home system. For information about the many functions of this device, see the system manual at www.abb.com/freeathome.
Important: Only use with fixed lighting loads. Do not install to control a receptacle, a motor-operated appliance, or a transformer-supplied appliance — doing so risks overheating and damage to other equipment.
| Spec | Value |
|---|---|
| Operating Voltage | 120 VAC, 60 Hz |
| Connection | No neutral wire required |
| Wireless Protocol | free@home, 2.400–2.483 GHz, meshed |
| Ambient Operating Temp. | 23°F to 113°F (-5°C to 45°C) |
| Load Type | Max Wattage |
|---|---|
| Incandescent or Halogen Lamp | 300 W |
| Electronic Low Voltage Transformer (ELV) | 200 W |
| CFL Lamps | 150 W |
| LED Lamps (max. 20 lamps allowed) | 150 W |
| Wire Color | Function |
|---|---|
| Black | Hot/Live (120 VAC) |
| Blue | Binary Input |
| Red | Load Output |
| Green | Ground |
The rocker and bezel can be exchanged. Turn power OFF before removing the adapter bezel with a screwdriver; turn power back ON after reassembly.
Install according to national and local electrical codes. When there is no ground connector in the wall box, the National Electrical Code (NEC®) allows a control to be installed as a replacement only if: (1) a non-metal, non-burning faceplate is attached with non-metal screws, OR (2) the circuit is protected by a ground fault circuit interrupter (GFCI). When installing, cap or remove the green wire before screwing the control into the wall box.
Wipe with a clean, damp cloth. Do not use any chemical cleaning solutions.
Customer Service: 800-816-7809, 7:00am–5:30pm CST Mon–Fri, elec_custserv@tnb.com
Technical Support: 888-385-1221 option 1, 7:00am–5:00pm CST Mon–Fri, freeathome_techsupport@us.abb.com
ABB Electrification Products, 860 Ridge Lake Boulevard, Memphis, TN 38120. © 2019 ABB Inc.
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