Product Description
Lutron RRST-HN4B-TF RadioRA 3 Sunnata RF Hybrid 4-Button Keypad — Truffle combines a keypad and dimmer in one device for retrofit-friendly scene control. It features large backlit buttons with status LEDs, a Front Accessible Service Switch (FASS) for safe servicing, and default printing that’s ready to use out of the box.
Key Specifications
- Brand: Lutron
- Series: RadioRA 3 Sunnata RF Hybrid Keypads
- Model: RRST-HN4B-TF (4-button)
- Finish/Color: Truffle (TF), Satin finish
- Power: 120 V~ 50/60 Hz (neutral required)
- Typical Power Consumption: 0.5 W (1.5 W max)
- Dimensions (H × W × D): 4.69" × 2.94" × 1.39"; front profile ~0.30"
- Mounting: U.S. wallbox (2.5" min depth; 3.5" recommended)
- Communications: RadioRA 3 Sunnata RF
- Warranty: 1-Year Limited
Free shipping on orders over $250
Product Benefits
- All-in-one control: Integrated dimmer plus keypad reduces devices and speeds retrofits.
- Ready to use: Default button printing enables immediate operation; custom engraving available later.
- Reliable feedback: LED bars aid in finding buttons and confirm status in low light.
- Service friendly: FASS switch safely removes power for lamp changes.
Key Features
- Programmable scenes: Press a button to fade lights/shades to preset levels; raise/lower available.
- Adjustable performance: High-/low-end trim and phase selection optimize LED compatibility.
- Field-changeable buttons: Swap to different layouts/colors with STBK-H replacement button kits; includes a redeemable credit for one custom kit.
- Status LED intensity: Adjustable through system programming.
- Designer aesthetic: Uses Lutron designer-opening wallplates (sold separately).
Enhanced Specifications
| Technical Specs | |
|---|---|
| Device Type | Hybrid keypad with internal dimmer (4-button) |
| Supply | 120 V~ 50/60 Hz; neutral required |
| Typical / Max Power | 0.5 W / 1.5 W |
| Regulatory | cULus, NOM, FCC, IC |
| Environment | 32 °F to 104 °F (0–40 °C), 0–90% RH, indoor only |
| Physical Specs | |
| Dimensions | 4.69" (H) × 2.94" (W) × 1.39" (D); profile ~0.30" |
| Wallbox | U.S. box; 2.5" min depth (3.5" recommended) |
| Finish | Truffle (TF), Satin |
| Performance Specs (Load Ratings) | |
| LED/CFL | 150 W not ganged; 100 W end or middle of gang |
| Incandescent / Halogen | 450 W not ganged; 350 W end; 250 W middle |
| ELV w/ Halogen | 450 W not ganged; 350 W end; 250 W middle (reverse-phase default) |
| Dimmable Fluorescent Ballast | 2.08 A (350 VA) not ganged; 1.67 A (250 VA) end; 1.25 A (200 VA) middle |
| Notes | Do not use to control receptacles or motor loads; follow phase mode guidance and transformer notes for MLV/ELV. |
| Compliance & Safety | |
| ESD | Tested to IEC 61000-4-2 |
| Line Variations | RTISS circuitry compensates for voltage fluctuations |
| Warranty | 1-Year Limited |
Application Examples
- Retrofit scene control where a single-gang keypad + dimmer is preferred
- Kitchen, bedroom, and media room presets with raise/lower adjustments
- Small commercial spaces needing engraved, easy-to-use lighting scenes
Installation Tips
- Confirm a neutral conductor is present before ordering or installing.
- Use a 2.5" minimum (3.5" recommended) wallbox for comfortable wiring.
- For reliable RF performance, place within ~25 ft of two additional compatible RadioRA 3 devices.
- Use the FASS switch to remove power before changing lamps.
- Do not control receptacles or motor-operated appliances.
- Set phase mode and dimming trims during commissioning to match the load.
Frequently Asked Questions
Q: What makes this a “hybrid” keypad?
A: It combines a programmable keypad and an internal dimmer in one device, reducing wall clutter.
Q: Does RRST-HN4B-TF require a neutral?
A: Yes, a neutral connection is required for all applications.
Q: What is the default button behavior on the 4-button model?
A: Top = ON, second = 50%, bottom two = OFF; raise/lower can be assigned via programming.
Q: Can I customize button text?
A: Yes. It ships with default icons and includes a credit to redeem one custom STBK-H replacement button kit.
Q: What loads and wattages are supported?
A: Typical ratings include up to 150 W LED/CFL (not ganged) and 450 W incandescent/halogen (not ganged), with derating when ganged. Set phase mode per load type.
Q: Is this indoor or outdoor rated?
A: Indoor use only (32 °F to 104 °F, non-condensing humidity).
Q: Which wallplates are compatible?
A: Lutron designer-opening wallplates (sold separately).
Q: What finish is “TF”?
A: Truffle (TF), a Satin finish color in the Sunnata palette.
