The ABB MRS/W Magnet Reed Contact Set (white) is a surface-mounted door/window magnetic contact for KNX security wiring.

Connect to MT/S4.12.2M / MT/U2.12.2 monitored inputs. For rolling doors use MC/C1.1.

Key Features

• Surface reed set: Magnet + contact, white finish.
• Door / window: Open/closed status for security zones.
• MT-ready: Supervised loops on MT terminals.

At a Glance

Specification	Detail
Product type	Magnet reed contact set (accessory)
Order code	MRS/W
Product ID	GHQ3201972R0001
Colour	White
Mounting	Surface
Bus	None (wired sensor)

Technical data, installation, drawings, and CE declaration are under Downloads.

Applications

• Perimeter windows: Intrusion / open-window status.
• Doors: Entry monitoring into MT zones.

Installation Notes

Align magnet and contact on the frame/leaf. Wire to an MT zone input per the MRS connection diagram.