Yoswit Smart TRIAC Dimmer Module

Model: YO619d (R2W)

Product Name: Yoswit Smart TRIAC Dimmer Switch Module

Type: In-wall / hidden smart dimmer module

Manufacturer: Designed by Yoswit in Hong Kong, China; assembled in Guangdong, China

Compliance: CE, FCC, RoHS

Warranty: 2-year limited warranty

Tagline

Smart dimming module — make your existing lights smart without replacing the wall switch.

Key Features

• No switch box dependency
  Does not need to be installed inside a switch wall box. Can be placed behind furniture, above the ceiling, or inside a suitable wiring enclosure.
• High dimmer compatibility
  Works with incandescent, dimmable LED and dimmable CFL loads. Supports leading-edge (front-phase) and trailing-edge (reverse-phase) TRIAC dimming.
• Brightness adjustment
  Adjust brightness increments in the Yoswit App for smooth, flicker-free dimming and energy savings.
• Scene modes
  One-tap scene switching — warm relaxing light in the evening, bright party mode, etc.
• Built-in timer / automation
  Schedule dimming or on/off operation by week, day, hour or minute. Schedules are stored in the module and run even if the phone disconnects.
• No hub required for local control
  Connects directly to a phone over Bluetooth / BLE — no gateway needed for basic use.
• Remote control with hub
  When connected to a Yoswit gateway/hub, enables remote control and smart-speaker integration.
• Proprietary mesh-like topology
  Yoswit’s proprietary Bluetooth-based topology lets dozens, hundreds or thousands of devices communicate reliably and securely.
• Low power consumption
  Very low standby power; dimming reduces energy use as light level decreases.

Specifications

Note: some older YO619d (R2) US/120V labels show “100–120V~, 60Hz, Max 80W”, while the global/module datasheet shows 100–240V AC, 400W TRIAC. Use the regional label only for that SKU.

Installation Warnings

• Disconnect power at the service panel before installation.
• Installation involving mains wiring must be carried out by a licensed electrician.
• Ground the unit according to local regulations/codes. Missing ground wire = unsafe installation / risk of personal injury.