The ABB BE/S8.230.3.2 KNX Binary Input is a modular DIN-rail device (MDRC) with 8 wide-range inputs that detect 10…230 V AC/DC signals and publish their states on the ABB i-bus® KNX network. Unlike contact-scanning models, these channels accept live voltage signals from conventional circuits without a separate scanning supply at the terminals.

Each channel includes a manual operation pushbutton and yellow LED status indication. The device is bus-powered and supports KNX Data Secure.

Key Features — Wide-Range Voltage Inputs

• 8 voltage inputs: Detect 10…230 V AC/DC signals from switches, contactors, or signalling circuits.
• Wide-range flexibility: One device covers both low-voltage and mains-level signalling.
• Manual operation: Pushbutton per channel for commissioning tests.
• Status LEDs: Yellow indication of input state.
• KNX Data Secure: Encrypted communication on secure lines.
• Bus powered: No auxiliary KNX power supply required for the electronics beyond the bus.

At a Glance

Specification	Detail
Product type	KNX Binary Input — 8-fold, 10–230 V, Data Secure
Order code	BE/S8.230.3.2 (2CDG110280R0011)
Digital inputs	8
Input voltage range	10…230 V AC/DC
Manual operation	Yes — pushbutton per channel
KNX Data Secure	Supported
Modular width	4 MW
Mounting	DIN rail (35 mm)
Bus system	KNX twisted pair (TP)

Technical ratings and classification codes are under Technical Specifications. Official ABB documents and the ETS application are under Downloads.

Applications

• Mains / low-voltage signalling: Capture 230 V or 24 V circuit states without separate contact-scanning hardware.
• Plant feedback: Contactor feedback, limit switches, and status lamps wired as voltage signals.
• Secure installations: Pair with secure routers/couplers such as IPR/S3.5.1.