JUNG KNX 8-Channel Binary Input Module, DIN Rail Mount, 4 TE Width 2128REG

In commercial and residential KNX installations, the JUNG 2128REG binary input module enables the integration of up to eight potential-free contacts, such as conventional switches, window contacts, or push-buttons, into the KNX bus system. Installed on a DIN rail in electrical distribution boards, it converts contact states into KNX telegrams for controlling lighting, blinds, or other bus devices.

Key specifications

• Bus system: KNX (TP)
• Function: Binary input, 8 channels
• Input type: Potential-free contacts
• Mounting: DIN rail (REG), width 4 TE (72 mm)
• KNX bus voltage: 21-30 V DC
• Current consumption: max. 10 mA
• Connection: Screw terminals
• Configuration: ETS software
• Protection class: IP20
• Operating temperature: 0 to +45 °C
• Housing material: Thermoplastic
• Certification: KNX certified

Why choose it

The module supports a wide range of functions including switching, dimming, blind control, value transmitter, scene recall, counter, and sequence controller, making it versatile for building automation. Its compact 4 TE design saves space in distribution boards, and screw terminals ensure reliable connections.

Ideal use cases

• Integrating conventional switches into KNX smart home systems
• Monitoring window and door contacts for security or HVAC control
• Controlling lighting and blinds via KNX actuators
• Implementing scene control and sequence logic in commercial buildings

Good to know

The device is configured with ETS (Engineering Tool Software), the standard tool for KNX projects. It is designed for indoor use in dry environments (IP20) and requires a KNX bus power supply.