ABB LR/M1.6.2 is the ABB i-bus® KNX Light Controller Module, 1-fold, 6 AX. It switches and dims one lighting group through a 1…10 V control interface and can provide constant-light control together with the ABB LF/U2.1 Light Sensor. It replaces LR/M1.6.1.

It snaps into a compatible RC/A4.2 or RC/A8.2 Room Controller slot. The host supplies the module interface, detects the inserted type and provides KNX communication, ETS parameterisation and manual functional testing. The module is not a standalone KNX device.

Function and Application

• Channels: 1 switched and dimmed lighting group.
• Application: Single-channel switching and 1…10 V dimming; optional closed-loop constant-light control with LF/U2.1.
• Host compatibility: RC/A4.2 and RC/A8.2 basis devices.
• Commissioning: Through the selected host Room Controller application; there is no separate module KNX address or product database.

At a Glance

Specification	Detail
Catalog description	Light Controller Module, 1-fold, 6 AX
Order code	LR/M1.6.2 (2CDG110108R0011)
EAN	4016779583671
Channels	1 switched and dimmed lighting group
Compatible hosts	RC/A4.2 and RC/A8.2
Relay Rating	6 AX
Dimming Interface	1…10 V
Control-current Capacity	Approximately 30 mA
Constant-light Sensor	LF/U2.1 required for closed-loop constant-light control
Replaces	LR/M1.6.1
Dimensions	93 × 49 × 42 mm (D × W × H)
Net weight	0.10 kg
Published protection value	ABB currently publishes IP54 for the product; treat this as a configured Room Controller value, not a freestanding enclosure rating.

Installation and Safety

Keep mains switching conductors, the 1…10 V control pair and the optional LF/U2.1 sensor connection arranged according to ABB terminal and insulation instructions. Isolate the Room Controller and all field/load circuits before inserting, removing or wiring the module. ABB currently publishes IP54 for the product; treat this as a configured Room Controller value, not a freestanding enclosure rating.

Use the model-specific technical data, instructions, diagrams and declarations below. Shared manuals may retain historical host names, while ABB's current compatibility records explicitly associate this module with RC/A4.2 and RC/A8.2.