Skip to main content
Demo phase – venfree is still being built.
venfree.de
Login
venfree/KNX Devices/Functions/KNX Window Contact & Door Contact

KNX Window Contact & Door Contact

KNX window and door contact interfaces compared: MDT BE-08024.02, 8 inputs for window and door contacts.

A KNX window-contact interface connects conventional reed switches (windows, doors, skylights) to the KNX bus. Each input sends a 1-bit telegram on state change, and automation can then reduce heating, retract blinds or trigger an alert.

BE-08024.02 Binäreingang 8-fach 24V
MDT		8134 €Details

Prices are net list prices (excl. VAT). Actual street prices may vary.

Related KNX Functions

KNX Binary Input & Push Button Interface
3 devicesfrom 23 €/ch
KNX Blind Actuator
4 devicesfrom 35 €/ch
KNX Heating Actuator
2 devicesfrom 45 €/ch

KNX Wiki: Basics

KNX Communication Object (CO)
A communication object (CO) is a data point on a KNX device. It has a type (DPT), a direction (send/receive), and is linked to COs on other devices via group addresses.
Read article →
KNX Flags – C, R, W, T, U, I
KNX flags control the behaviour of a communication object on the bus. They define whether a CO can send, receive or respond to telegrams, and whether it requests a value on startup.
Read article →
KNX Group Address
A KNX group address (GA) is a logical address that links communication objects (COs) of different devices. Whatever is written to a GA is received by all other COs bound to that GA, the publish-subscribe principle of KNX.
Read article →
KNX in Building Automation
KNX is the world-leading open standard for building automation, standardised as ISO/IEC 14543-3 and EN 50090. It is used in residential, commercial and infrastructure projects in over 190 countries.
Read article →

Frequently Asked Questions

KNX Window Contact & Door Contact: What is it?

A KNX window-contact interface connects conventional reed switches (windows, doors, skylights) to the KNX bus. Each input sends a 1-bit telegram on state change, and automation can then reduce heating, retract blinds or trigger an alert.

KNX Window Contact & Door Contact: What does it cost?

In the venfree catalog from 17 € per channel (net list price, excl. VAT). The total depends on the number of channels and the manufacturer.

KNX Window Contact & Door Contact: Which manufacturers are available?

In the venfree catalog: MDT, among others.

KNX Window Contact & Door Contact: How many do I need?

It depends on the number of channels. venfree automatically calculates the requirement from your rooms and functions, free and without an account.

Need a KNX Window Contact & Door Contact?

venfree automatically calculates how many channels and devices you need, based on your rooms and functions. Free, no account required.

Plan now
← Function overviewKNX Devices →KNX Wiki →