The ABB EUB/S 1.1 Monitoring Unit (order code EUB/S1.1) supervises up to 100 KNX devices, organised in 5 groups. It checks presence and minimum functionality (send/receive) so missing or failed devices can raise alarms on the bus.

Compact 2 MW, bus-powered MDRC — pair with data logging such as BDB/S1.1 for broader maintenance visibility.

Key Features

• Up to 100 devices: Continuous presence / function monitoring.
• 5 monitor groups: Structure supervision by zone or system area.
• Multiple monitor modes: Flexible check strategies (presence and communication).
• Bus-powered: No auxiliary mains — KNX TP only.
• 2 MW MDRC: Minimal panel footprint.

At a Glance

Specification	Detail
Product type	KNX bus monitoring unit, MDRC
Order code	EUB/S1.1
Product ID	2CDG110066R0011
Max. devices	100
Monitor groups	5
Supply	KNX bus only
Width	2 MW
Bus system	KNX TP

Technical data, installation instructions, ETS .knxprod, drawings, EPLAN, and declarations are under Downloads.

Applications

• System health: Detect offline sensors, actuators, or gateways early.
• Facility alarms: Map group faults to visualization or BMS.
• Maintenance: Combine with cycle/hour logging via BDB/S1.1.

Installation Notes

Mount on a 35 mm DIN rail (2 MW). Connect KNX only. Assign monitored devices in ETS with the official .knxprod from Downloads.