SwitchLinc 2-Wire Dimmer – INSTEON (RF only) Remote Control Dimmer (2474D)

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Similar in appearance to SwitchLinc 2477D but does not require a neutral switch box connection.  This dimmer  is for use with incandescent lamps only.  Not suitable for 3-way switch applications.


  • RF-only communication, no Neutral wire needed otherwise similar to SwitchLinc Dimmer.
  • Easy 2-wire connection, perfect for older homes without neutral wires

Essential Info

Two wire connection means you can finally incorporate locations without a neutral connection into your INSTEON network.

How is the SwitchLinc 2-Wire Dimmer different than the SwitchLinc family of dimmers?

SwitchLinc 2-Wire Dimmer (#2474DWH) SwitchLinc Dimmer (#2477D)
Communication Radio (RF) Radio + powerline (dual-band)
Wiring Line
Load Types Incandescent Incandescent, dimmable LED
Minimum Wattage Requirement 25 Watt Bulb


3-Way Compatible No Yes

Scene Lighting This SwitchLinc Dimmer can be a member of more than 400 scenes (i.e. "Movie Time," "Party," "Romance," etc.). Scenes allow you to control multiple lights, rooms or even the whole home with a single command. This is an elegant feature usually found only in systems costing tens of thousands of dollars and requiring extensive rewiring of your home. All member lights can ramp to your independently desired brightness levels at your chosen ramp rate(s). One set of lights can dim slowly, while another set turns off instantly, all controlled with one command from one button. Use the INSTEON KeypadLinc Dimmer if you want to control multiple scenes from one controller.




Manufacturer Product No.: 2474DWH, SwitchLinc 2-Wire Dimmer - INSTEON Remote Control Dimmer (RF)

UPC: White - 2474DWH: 813922010817 

Warranty: 2 years, limited


INSTEON Power line Mesh Repeater: No

INSTEON RF Mesh Repeater Yes

INSTEON Controller: Yes

INSTEON Responder: Yes

Maximum Links / Scenes: 400

Load Brightness Levels: 32 locally (256 with software)

LED: White when load is on, bottom white LED is on when load is off. Blinks red when responder does not acknowledge (can be disabled via software). Blinks red or green during setup.

LED Brightness: Adjustable, from off to bright

Local On-level: Adjustable, 32 fixed brightness levels or resume dim

Local Ramp-rate: Adjustable from 0.1 seconds to 9 seconds locally (0.1 seconds to 8 minutes via software)

Local Control: Yes

Commands supported as controller: On, Off, Fast-on, Fast-off, Begin bright, Begin dim, End bright, End dim

Software configurable: Yes

RF Range: Up to 100-feet open air

Phase bridge detect beacon: No, INSTEON RF only device

INSTEON Device Category: 0x01 dimmable lighting control

INSTEON device subcategory: 0x24


Mounting: Single gang electrical box

Wires: Black - line (16 gauge) Red - load (16 gauge) Copper - ground (16 gauge)

Color: White paddle (color change kits available), clear back case

Set Button: 1, clear

Air Gap: Yes (Set button pulled out)

Plastic: UV stabilized polycarbonate

Beeper: Yes

Beep on Button Press: Optional (off by default)

LEDs: 9 white brightness LEDs, 1 green/red status LED

Dimensions: 4.1" H x 1.8" W x 1.2" D

Weight: 3.6oz

Operating Environment: Indoors

Operating Temperature Range: 32° to 104° F (0° to 40° C)

Operating Humidity Range: 0-90% relative humidity

Storage Temperature Range: -4° to 158° F (-20° to 70° C)


Supply Voltage: 120 Volts AC +/- 10%, 60 Hertz, split single phase

Frequency: 60Hz

Load Type(s): Wired-in incandescent lighting

Maximum Load: 600 Watts

Minimum Load: 25 Watts

User Replaceable Fuse: No

Hardwired Remote Control: No

Retails All Settings Without Power: Yes, saved in non-volatile EEPROM

Standby Power Consumption: <1 Watt


Safety Approval(s): ETL (Intertek Testing Services)

Certifications: FCC, IC Canada


No X10 Support: INSTEON RF-only product

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