Smart Touch Display(4 Inch) — Letour
Product Name: Smart Touch Display-4 Inch (Built-In Relay), Smart Home, KNX Technology, Artificial Intelligence (AI) Voice Control
The Smart Touch Display is a compact, state-of-the-art control panel designed for modern smart homes. With a sleek 4-inch touchscreen, this device integrates seamlessly into any residential or commercial environment, providing intuitive control over various smart home systems. The built-in relay and compatibility with KNX technology ensure a robust and flexible automation experience, enhancing convenience and efficiency in managing your day-to-day activities.
Key Specifications:
- Display: 4-inch capacitive touchscreen with high-resolution display for clear visibility and user-friendly interaction.
- Connectivity: Supports KNX technology, providing seamless integration with a wide range of smart home devices and systems.
- Built-In Relay: Features an integrated relay for direct control of connected devices, offering reliability and ease of installation.
- Voice Control: Harnesses Artificial Intelligence for advanced voice commands and control, compatible with popular voice assistants for hands-free operation.
- Design: Slim profile and contemporary design easily blend into any interior décor.
- Installation: User-friendly setup with clear instructions for hassle-free installation and programming.
- Compatibility: Works with various smart devices and platforms, providing centralized control from a single interface.
- Power Supply: Requires a standard power supply, ensuring consistent performance and reliability.
Usage: Ideal for both residential and commercial settings, this smart display allows you to manage lighting, HVAC, security systems, and more through a single, integrated platform. Whether you are enhancing a new smart home project or upgrading existing installations, this device offers versatile operation to meet diverse automation needs.
| Dimensions | 1 × 2 × 3 cm |
|---|---|
| Equipment Type | Touch Panel |
| Series | P40 Series |
Shipping across Europe
We ship KNX devices and smart home equipment to all EU member states, as well as to the UK, Switzerland and Norway. All orders are dispatched from within the European Union, so there are no extra customs charges or import duties for EU destinations.
- Processing time: in-stock orders are prepared and handed to the courier within 1–2 business days.
- Standard delivery: typically 2–4 business days for Central & Western Europe and 4–7 business days for the rest of the EU.
- Items subject to availability: when a product is not in stock or is supplied on order, the delivery time depends on stock and supplier lead time. The maximum delivery term is 30 days from order confirmation; we will inform you of the estimated date and keep you updated.
- Carriers: tracked courier services (DPD, GLS, DHL) with a tracking number sent by e-mail once your order ships.
- Shipping cost: transport is not included in the product price and is calculated separately, depending on the destination country and distance or the value of the products ordered. The exact amount is shown at checkout.
Payment & Delivery conditions
- Individual products: orders placed in the online shop are processed against 100% advance payment. Products are reserved, ordered from our suppliers and dispatched only after the order value has been paid in full.
- Contracted projects: for a complete project carried out by us (design, supply and installation/commissioning), a 50% advance is required to start the works, with the balance due on completion as set out in the contract.
Delivery terms are estimates that start from the moment your order is confirmed and the advance payment is received. They depend on stock availability and the destination country. In all cases, orders are delivered within a maximum of 30 days unless another term is expressly agreed with you. If an item cannot be supplied within this period, you may choose to wait, replace it or receive a full refund.
Pricing & discounts
The prices listed in the shop are reference prices for individual items and may be subject to change. The final price can be optimised depending on the order value and the scope of your project.
- Volume discounts: the higher the order value, the better the pricing we can offer; tiered discounts are confirmed in your quote.
- Per-project quotation: for a complete KNX project we prepare a dedicated, per-project offer with project-based pricing instead of standard list prices.
- Professional / trade pricing: integrators, installers and resellers receive special conditions — log in to your account to see your prices.
Returns & Warranty
- 14-day returns: in line with EU consumer law, you may return unused products in their original packaging within 14 days.
- Manufacturer warranty: all KNX devices come with the full manufacturer warranty against defects.
- Technical support: our engineers can help with selection, ETS configuration and commissioning across Europe.
For order tracking, payment, delivery terms, returns or any shipping question, contact us at office@smartknx.eu.


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