Wiesemann & Theis GmbH

Networking, sensors and interface technology for industry, office and IT

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Press release January 2026

The new W&T WLAN-IO Digital 4x In/Out is here

Industrial-grade Wi-Fi I/O module
for IoT applications

Wiesemann & Theis is expanding its portfolio of decentralized network I/Os with the WLAN-IO Digital 4x In/Out, a compact, Wi-Fi-connected IoT device for wireless switching and monitoring of digital signals. The device has four channels, each of which can be configured as a digital input or output, making it highly adaptable to a wide range of applications.

The Wi-Fi interface allows digital signals to be monitored and controlled even in locations where no wired network is available. The WLAN-IO Digital 4x In/Out functions like a network switch: devices such as lights, door contacts, and other actuators can be turned on and off, while the states of pushbuttons or digital sensors are reliably detected.

The WLAN-IO (Art. No. 97733) is easy to configure and stands out for its IoT-oriented protocol support (such as MQTT and HTTPS) as well as its robust hardware, designed for 24/7 industrial operation.

About Wiesemann & Theis

For many years, Wiesemann & Theis GmbH has been developing and manufacturing innovative components for automation, industrial communication, and remote access at its Wuppertal facility.
The company’s products are used worldwide in industry, building automation, and IT infrastructure.


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  • Thumbnail: Preview image: WLAN-IO Digital 4x In/Out

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WLAN-IO Digital 4 entrées/sorties The new WLAN-IO Digital 4x In/Out.

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