Product Overview
The Smartwares SH4-90159 is a battery-operated wireless double wall switch designed for convenient home automation. It allows you to control lighting and other compatible devices remotely, eliminating the need for complex wiring. This switch is an integral part of the Smartwares Plug & Connect series, ensuring seamless integration with other Plug & Connect receivers.

Image: The Smartwares SH4-90159 wireless double wall switch, shown in white.

Image: A banner illustrating the Smartwares Plug & Connect ecosystem, including various compatible devices.

Image: A detailed close-up view of the Smartwares wireless wall switch, highlighting its two distinct buttons.
Safety Information
General Safety Guidelines
- Read all instructions carefully before using this product.
- Do not expose the device to moisture, water, or extreme temperatures.
- Do not attempt to open, modify, or repair the device yourself. Refer all servicing to qualified personnel.
- Keep the device and its components out of reach of children.
- Dispose of used batteries responsibly according to local environmental regulations.
Package Contents
What's Included
Please verify that all the following items are present in your package:
- 1 x Smartwares SH4-90159 Wireless Double Wall Switch
- Mounting accessories (e.g., screws, adhesive tape)
- 1 x CR2032 Lithium-ion Battery (may be pre-installed)
- User Manual
Setup and Installation
Battery Installation
The SH4-90159 switch typically comes with a pre-installed battery. If replacement is needed, follow these steps:
- Carefully locate and open the battery compartment on the back of the switch.
- Insert a new CR2032 Lithium-ion battery, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Close the battery compartment securely.
Mounting the Wall Switch
The wireless wall switch can be mounted on any flat, clean surface using the provided accessories.
- Adhesive Mounting:
- Clean the desired mounting surface thoroughly to ensure it is free of dust, dirt, and grease.
- Peel off the protective film from the adhesive tape located on the back of the switch.
- Press the switch firmly onto the prepared surface for at least 30 seconds to ensure strong adhesion.
- Screw Mounting:
- Mark the desired mounting location on the wall.
- If necessary, drill pilot holes that align with the screw holes on the switch's mounting plate.
- Secure the switch to the wall using the provided screws.

Image: The Smartwares wireless wall switch mounted on a wall next to a bed, demonstrating a typical installation scenario.
Operation
Pairing with Smartwares Plug & Connect Receivers
This wireless wall switch requires pairing with compatible Smartwares Plug & Connect receivers (e.g., SH4-90264, SH4-90256, SH4-90263, SH4-90266, SH4-90265) to control your devices.
- Ensure your Smartwares Plug & Connect receiver is powered on and in pairing mode. Consult your specific receiver's manual for detailed instructions on how to activate its pairing mode (this often involves pressing a 'learn' or 'program' button).
- Within a few seconds of the receiver entering pairing mode, press one of the buttons on your SH4-90159 wireless wall switch.
- The receiver should provide an indication of successful pairing, such as a light flashing or an audible click.
- Repeat this process for the second button on the double switch if you intend to control a separate receiver or a different function on the same receiver.

Image: A Smartwares Plug & Connect receiver module, which pairs with the wireless wall switch to control devices.
Controlling Devices
Once successfully paired, simply press the corresponding button on the wireless wall switch to toggle the connected device or light on or off.
The double switch design allows for independent control of up to two separate devices or functions, with one button assigned to each.

Image: Examples of other Smartwares Plug & Connect devices, including a remote control and a smart bulb, demonstrating system compatibility.
Maintenance
Cleaning
To clean the surface of the switch, use a soft, dry cloth. Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the finish.
Battery Replacement
If the switch becomes unresponsive, its range decreases, or the indicator light (if present) signals low power, the battery may need to be replaced. Refer to the "Battery Installation" steps in the Setup section for instructions.
Troubleshooting
Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Switch does not control device. | Not paired correctly, battery low/dead, receiver out of range, receiver not powered. | Re-pair the switch with the receiver. Replace the battery. Move the switch closer to the receiver. Ensure the receiver is plugged in and powered on. |
| Short battery life. | Frequent use, faulty battery, extreme temperatures. | Replace with a fresh, high-quality CR2032 battery. Ensure the switch is used within recommended temperature ranges. |
| Buttons feel unresponsive or sticky. | Dirt accumulation, internal mechanism issue. | Clean the surface of the switch. If the issue persists, try resetting the device by removing and re-inserting the battery. If the problem continues, contact customer support. |
| Intermittent control or delayed response. | Radio interference, range issues, low battery. | Ensure there are no strong radio interference sources nearby (e.g., other wireless devices). Move the switch closer to the receiver. Replace the battery. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | SH4-90159 |
| Manufacturer | Smartwares |
| Dimensions (L x W x H) | 1.6 x 8 x 8 cm |
| Weight | 50 grams |
| Battery Type | 2 x Lithium-ion (CR2032) |
| Voltage | 3 Volts |
| Color | White |
| Material | Plastic |
| Switch Type | 2-way, Double Wireless Wall Switch |
| Mounting Type | Wall Mount |
| Compatibility | Smartwares Plug & Connect receivers |
Warranty and Support
Warranty Information
This product comes with a 1-year availability of spare parts. For detailed warranty terms and conditions, please refer to the warranty card included with your purchase or visit the official Smartwares website.
Customer Support
For technical assistance, troubleshooting, or any product-related inquiries, please contact Smartwares customer support. Contact details can typically be found on the Smartwares website or in the product packaging.
Website: www.smartwares.eu





