X10 WS4777 — 3-Way Wall Dimmer Set Setup and Operating Instructions

Setup and operating instructions for the X10 WS4777 3-Way Wall Dimmer Set (WS477 Master Switch + CS277 Companion Switch) — a push-button wall dimmer for incandescent-only lighting, controllable locally and remotely via X10.

Overview

The WS4777 Wall Dimmer Set controls incandescent-only lights rated between 40W and 500W (lights below 40W might flicker or operate erratically). The set includes the WS477 Master Switch and CS277 Companion Switch, used to replace two switches that control the same light (3-way). A push-button on each switch provides local on/off and dim/bright control. The WS477 master switch can also be used alone to replace a regular single switch.

WARNING: Wall Dimmer Modules must not be used to control appliances or fluorescent lamps.

Installing the Wall Dimmer Module (3-Way Applications)

1. Disconnect the power at the circuit breaker panel.
2. Remove wall plates and unscrew the existing switches from their boxes. Identify the common wire at each existing switch (usually connected to a distinct color screw terminal).
3. Replace one existing wall switch with the WS477 Wall Dimmer (Master): connect the common wire to the BLUE wire on the WS477 using a wire nut. Connect the two remaining "traveller wires" to the RED and BLACK wires on the WS477 using wire nuts. If one traveller is red, connect it to the RED wire on the WS477.
4. Replace the other existing wall switch with the CS277 Companion Switch: connect the common wire to one of the CS277's BLUE wires. Connect the traveller wire you connected to RED on the WS477 to the RED wire on the CS277. Connect the remaining traveller wire to the second BLUE wire on the CS277. Screw both switches into their wall boxes — don't replace the wall plates yet.

Installing the Wall Dimmer Master Module Only (Single-Switch Applications)

1. Disconnect the power at the circuit breaker panel.
2. Remove the wall plate and unscrew the existing switch from its box.
3. Remove the two wires from the existing switch and connect them to the BLACK and BLUE wires on the WS477, using wire nuts.
4. Cap off the unused RED wire with a wire nut. Ensure no bare wire whiskers are exposed; use insulating tape over wire nuts if necessary. Screw the switch into the wall box — don't replace the wall plate yet.

Setting Up and Operating the Wall Dimmer

• Set the House Code dial to the same letter (A through P) as your X10 controller(s).
• Set the Unit Code dial to an unused code (1–16) controllable from any X10 controller.
• Set the power on-off slide switch (under the push button) to ON (right). Turn this switch OFF (left) when changing a light bulb.
• Refit the wall plate(s), then turn power back on at the circuit breaker panel.
• Press the button quickly to turn the module on and off. Press and hold to dim or brighten. Note: if nothing happens when pressed, you may have held it too long and dimmed the light without noticing.
• The module can also be turned on/off and dimmed/brightened remotely from X10 controllers.

Warranty

90-Day Limited Warranty. X10.com, a division of X10 Wireless Technology, Inc. (X10), warrants X10 products to be free from defective material and workmanship for 90 days from the original date of retail purchase. X10 will repair or replace, at its sole discretion, a defective product returned within the warranty period with proof of purchase.

For service: call 1-800-675-3044, visit www.x10.com, or email sales@x10.com.