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August 31, 2026 4 min read
Installation and owner's guide for the PCS PulseWorx WS1C UPB Wall Switch (Power Relay Control) and optional RWS Remote Wall Switch.
Installation and owner's guide for the PCS PulseWorx WS1C Wall Switch (Power Relay Control) and its optional companion, the RWS Remote Wall Switch. These Decora-style rocker switches use PulseWorx's two-way UPB™ powerline communication technology for local and remote lighting control.
The WS1C is a high-quality light switch that allows local rocker switch control of a lighting load while also incorporating UPB™ two-way powerline communication, giving it the ability to be remotely controlled by other UPB™-compatible controllers. It's highly configurable, can store up to 16 preset light levels for lighting scenes, and transmits UPB™ messages (including current light level reports) on rocker switch events. This model is intended for control of LED 0-10V drivers connected to a PRC receiver, for indoor use only.
The RWS is a low-cost, optional companion device to the WS1C. It has a Decora-style rocker switch that controls the WS1C the same way its local rocker does, enabling three-, four-, or five-way lighting circuits.
The WS1C's rocker switch includes an air-gap switch that removes all power from the load for safe installation and bulb replacement. Firmly press the rocker bottom until you hear a loud "click" or see the SYSTEM "OFF" label on the top rocker to activate it.
| Rocker Event | Top Rocker | Bottom Rocker |
|---|---|---|
| Single-Tap | Brightens light to 100% (on) | Controls light to 0% |
| Double-Tap | Brightens light to 50% | Controls light to 15% |
| Hold | Starts fading (brightening) toward 100% | Starts fading (dimming) toward 0% |
| Release | Stops brightening | Stops dimming |
The WS1C has a multi-color status LED (normally blue) indicating UPB™ communication status. This can also be configured via UPStart Setup Software to a solid color or to reflect load state.
| UPB™ Status | LED Color |
|---|---|
| No UPB™ message on the power line | Blue |
| Receives a UPB™ message for the switch | Magenta |
| Receives a UPB™ message for another device | Black |
| Switch is transmitting a UPB™ message | Red |
Once installed, the WS1C can be configured manually or with PCS's free UPStart Setup Software (used with a Powerline Interface Module, PIM) for advanced features like preset light levels, timed auto-off, and custom UPB message transmissions.
| Option | Factory Default | Possibilities |
|---|---|---|
| Top Rocker Single-Tap Action | Control to 100% | Any level (0%–100%) |
| Bottom Rocker Single-Tap Action | Control to 0% | Any level (0%–100%) |
| Preset Light Levels (Scenes) | 7 factory-defined links | Up to 16 preset levels linked to UPB™ controllers, with optional blink mode |
| Timed Auto-Off | Disabled | Disabled or auto shut-off in 1–240 minutes |
| Rocker Switch UPB Transmissions | Disabled | Any of 15 UPB messages per rocker event |
| UPB Receive Sensitivity | HIGH | HIGH or LOW |
| LED Color Control | Diagnostic LED | Any of 16 LED modes (blue, red, magenta, black) |
| Maximum Load | 10A resistive, magnetic, or inductive |
| Connections | 16 GA, 105°C insulation |
| LED Indicator | Yes |
| Dimensions | 4.3 × 1.7 × 1.9 in |
| Weight | 0.3 lb |
| Mounting | Standard J box |
| Input Power | 120 ±12 VAC |
| Input Frequency | 60 ±0.3 Hz |
| Operating Temp | -40°F to 140°F |
Seller warrants this product, if used per all applicable instructions, to be free from original defects in materials and workmanship for a period of five years from the date of purchase. Refer to the warranty information on the PulseWorx website (www.PulseWorx.com) for exact details.
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