The ABB Busch-Watchdog PRO 280° KNX (order family BM/A4.1-13x) is a 4-channel outdoor/indoor movement detector with a 280° field of view, IP55 housing, and integrated KNX bus coupler. Choose finish below — Brown, Aluminium silver, Studio white, Anthracite, or Stainless steel.

Four PIR sensors cover up to 16 m frontally and laterally (at 2.5 m mounting height), with ground and rear-field detection. Brightness and temperature channels feed KNX; remote setup and up to 10 KNX functions are available via Bluetooth and the ABB SmartConnect app.

Key Features

• 280° detection: 4 PIR sensors · ~110 sectors / 440 switching segments · up to 16 m range.
• 4 movement channels: Independent KNX switching based on movement and brightness.
• Twilight + temperature: 1 brightness/twilight channel (3 thresholds) and 1 temperature channel (3 thresholds).
• Bluetooth + SmartConnect: Adjust parameters and trigger up to 10 KNX functions from the app.
• Mechanical flexibility: Level balancing ±30°; optics horizontal +90°/−60°, vertical +30°/−30°.
• IP55 outdoor-ready: −25 … +55 °C · integrated dismounting protection · protective foil for range masking.
• 5 finishes: Select color on this page — each maps to its own order code and Product ID.

At a Glance

Specification	Detail
Product type	KNX movement detector, surface-mounted, 280°
Order family	BM/A4.1-13x
Movement channels	4
Detection angle / range	280° · max. 16 m (at 2.5 m height)
Rear-field detection	Approx. 1 m
Protection	IP55
Bus supply	KNX TP, integrated coupler · typ. 12 mA · 0.3 W
App	ABB SmartConnect (Bluetooth)
Finishes	Brown · Aluminium · White · Anthracite · Stainless steel

Product manual, installation instructions, ETS .knxprod, CAD, EPLAN, and declarations are under Downloads.

Color / Order Codes

Finish	Order code	Product ID
Brown (RAL 8017)	BM/A4.1-131	2CKA006132A0425
Aluminium silver (RAL 9006)	BM/A4.1-133	2CKA006132A0426
Studio white (RAL 9016)	BM/A4.1-134	2CKA006132A0427
Anthracite (RAL 7016)	BM/A4.1-135	2CKA006132A0428
Stainless steel	BM/A4.1-136	2CKA006132A0429

Applications

• Façade & entrance lighting: Automatic switching with ground/rear-field coverage when leaving the door.
• Garden and driveway: Wide 280° outdoor surveillance with IP55.
• Corner mounting: Use a Busch-Watchdog PRO corner adapter to cover two building sides.
• Holiday / security scenes: Presence simulation and multi-channel KNX lighting via SmartConnect.

Installation Notes

Surface-mount (wall/ceiling; also ISO 68 mm boxes). Connect KNX via the enclosed terminal block under bus voltage. Commission with the native ETS application (Downloads) and optionally fine-tune via ABB SmartConnect over Bluetooth. Mask detection zones with the enclosed protective foil; use brightness-independent test mode to verify coverage.