The ABB RC/A4.2 is a Room Controller basis device that hosts up to 4 plug-in modules (binary inputs, switch/shutter actuators, dimmers, and more). The basis unit is the KNX bus device; modules snap into slots and inherit power/bus connectivity from the chassis.

Key Features

• 4 module slots: Mix input and output modules per room or zone.
• Manual test: Integrated manual control for module function tests.
• Flexible topology: Any compatible module type in any slot.
• Surface / underfloor friendly: Compact SM housing for decentralized installation.

Compatible Modules (on Smartanix)

• BE/M4.12.1 / BE/M4.24.1 / BE/M4.230.1 — binary inputs
• ES/M2.230.1 / ES/M2.24.1 — electronic switch actuators
• JA/M2.230.1 / JA/M2.24.1 — shutter actuators
• SA/M2.16.1, SD/M2.6.2, LR/M1.6.2

At a Glance

Specification	Detail
Product type	KNX Room Controller Basis Device
Order code	RC/A4.2 (2CDG110104R0011)
Module slots	4
Bus system	KNX TP