Key Features
- ? + ? + ⚡ Push AC phase-cut dimmer, 1 channel output.
- Controls single-color dimmable LED lamps, traditional incandescent, and halogen lights.
- Tuya App cloud control: supports on/off, brightness adjustment, delay, and timer functions.
- Voice control compatibility with Amazon Alexa, Google Assistant, Tmall Genie, and Xiaodu smart speakers.
- 256 levels (0-100%) smooth dimming without flicker.
- Leading-edge or trailing-edge dimming selectable via ?️ DIP switch.
- Minimum brightness adjustable via a dedicated ? key.
- Selectable 0.5s or 3s light on/off fade time.
- Compatible with 2.4G RF single-zone or multi-zone dimming remote controls.
- Can function as a ?-? converter to synchronously control other RF dimmable LED controllers/drivers via Tuya App.
- Connects with an external push switch for on/off and 0-100% dimming control.
- Designed for easy installation within standard wall junction boxes behind push switches.
- Features automatic ? overheat and ? overload protection with ? self-recovery.
Technical Parameters
| Parameter | Value | Details |
|---|---|---|
| Input Voltage | AC100-240V | |
| Output Voltage | AC100-240V | |
| Output Current | Max 1.5A | |
| Output Power | 150-360W | |
| Warranty | 5 years | ?️ Warranty |
| Protection | Over-heat / Over-load | ?️ Protection |
| Input Signal | Tuya APP + RF + Push Dim | ?️ Input Signal |
| Control Distance | 30m (Barrier-free space) | ? Control Distance |
| Dimming Level | 256 levels | ?️ Dimming Level |
| Dimming Range | 0-100% | ?️ Dimming Range |
| Operation Temperature | Ta: -30°C ~ +55°C | ?️ Operation Temp |
| Case Temperature (Max.) | Tc: +85°C | ?️ Case Temp (Max.) |
| IP Rating | IP20 | IP Rating |
| EMC Standard | ETSI EN 301 489-1 V2.2.3, ETSI EN 301 489-17 V3.2.4 | EMC Standard |
| Safety Standard | EN 62368-1:2020+A11:2020 | Safety Standard |
| Radio Equipment | ETSI EN 300 328 V2.2.2 | Radio Equipment |
| Certification | CE, EMC, LVD, RED | ✅ Certification |
| Package Size | L60 x W60 x H40mm | ? Package Size |
| Gross Weight | 0.061kg | ⚖️ Gross Weight |
Mechanical Structures and Installations
The S1-B(WT) unit is designed for integration into standard electrical systems. It features clearly marked terminals for AC power input (L/N) and AC power output (L/N) to the load. A ?️ DIP switch allows selection between leading-edge and trailing-edge dimming modes, crucial for compatibility with different types of dimmable loads. A ? 'Match/Min set' key serves dual purposes: for pairing with RF remotes and for setting the minimum brightness level. The device is compact, measuring approximately 52mm in width and height, and 26mm in depth, making it suitable for installation within standard wall junction boxes, often placed behind a conventional push switch.
Typical Wall Junction Box Mounting: The unit's dimensions (approx. 52mm x 52mm x 26mm) are optimized for fitting into standard wall junction boxes, ensuring a clean and integrated installation.
Compatible Load Types
| Load Type | Maximum Load (220V / 110V) | Remarks |
|---|---|---|
| Dimmable LED lamps | 200W / 100W | The actual number of LED lamps depends on their design and power factor. |
| Triac Dimmable LED drivers | 200W / 100W | Maximum number of drivers is calculated by dividing 200W by the driver's rated power. Ensure total surge current does not exceed 2x 65A. |
| Incandescent lighting, HV Halogen lamps | 400W / 200W |
System Wiring and Diagrams
The S1-B(WT) integrates seamlessly into smart home ecosystems. It connects to a ? WiFi network, enabling control via the Tuya App from a mobile phone. This setup also allows for voice control through smart assistants like Amazon Alexa and Google Assistant. For extended range or alternative control, ? RF 2.4G remotes can be paired directly with the S1-B(WT) unit or used to control other compatible RF dimmable LED drivers and lights. The system supports both ? wired and ? wireless connections for various components.
Wiring Diagram: The device requires standard AC input (L/N) and provides AC output (L/N) to the lighting load. An external push switch can be wired to the 'Match/Min set' terminals for manual on/off and dimming control. Connections for dimmable LED lights and Triac dimmable LED drivers are illustrated, showing the correct polarity and wiring sequence.
Leading/Trailing Edge Dimming: The ?️ DIP switch on the unit is used to select the dimming mode. Leading-edge (forward-phase) dimming is typically used for traditional incandescent and halogen loads, while trailing-edge (reverse-phase) dimming is often preferred for modern LED lamps and drivers. Correct selection ensures smooth and flicker-free dimming performance.
AC Push Dim Function
An external push switch can be connected to the S1-B(WT) for manual control:
- ▶️ Short Press: Turns the light on or off.
- ▶️ Long Press (1-6s): Initiates step-less dimming. Repeated long presses alternate the dimming direction (up/down).
Dimming Memory: The dimmer remembers the last set brightness level and returns to it when switched back on, even after a power failure.
Tuya App Pairing and Operation
To connect the S1-B(WT) to the Tuya App:
- Smart Config Mode: Press and hold the 'Match/Set' key for 2 seconds, or quickly press it twice. The blue LED indicator will flash rapidly.
- AP Config Mode: Press and hold the 'Match/Set' key for 5 seconds. The blue LED indicator will flash slowly. (Use AP mode if Smart Config fails).
Upon successful connection, the blue LED stops flashing, and the device appears in the Tuya App. The app interface allows for precise brightness adjustment via a slider, selection of lighting scenes, and setting timers.
S1-B(WT) RF Remote Control Pairing
The S1-B(WT) can be paired with 2.4G RF remote controls using two methods:
Method 1: Using S1-B(WT)'s Match Key
- Match: Short press the 'Match' key on the S1-B(WT), then immediately press the on/off key (for single-zone remotes) or zone key (for multi-zone remotes) on the RF remote.
- Delete: Press and hold the 'Match' key on the S1-B(WT) for 15 seconds. The light will blink 5 times, indicating all remotes have been deleted.
Method 2: Using Power Restart
- Match: Power off the S1-B(WT), then power it on and off again rapidly. Immediately short press the on/off key (or zone key) 3 times on the RF remote. The light blinking 3 times confirms successful pairing.
- Delete: Power off the S1-B(WT), then power it on and off again rapidly. Immediately short press the on/off key (or zone key) 5 times on the RF remote. The light blinking 5 times confirms deletion.
S1-B(WT) as WiFi-RF Converter
The S1-B(WT) can also act as a bridge between WiFi and RF devices. This allows the Tuya App to control other RF dimmable LED controllers or drivers synchronously.
Pairing/Deleting with Tuya App:
Method 1: Using Controller's Match Key
- Match: Short press the 'Match' key on the S1-B(WT) controller, then immediately press the on/off key within the Tuya App. The controller's LED indicator will flash rapidly to confirm successful pairing.
- Delete: Press and hold the 'Match' key on the S1-B(WT) controller for 5 seconds. The LED indicator will flash rapidly, confirming deletion.
Method 2: Using Power Restart
- Match: Power off the controller, then power it on and off again rapidly. Immediately short press the on/off key 3 times within the Tuya App. The light blinking 3 times confirms successful pairing.
- Delete: Power off the controller, then power it on and off again rapidly. Immediately short press the on/off key 5 times within the Tuya App. The light blinking 5 times confirms deletion.
