ABB BM/A4.1-135 Busch-Watchdog PRO 280 ° Motion Detector KNX Anthracite

Description

Introduction

The ABB BM/A4.1-135 Busch-Watchdog PRO 280 ° is a 4-channel motion detector engineered for indoor and outdoor building automation applications. Operating on the KNX system with KNX Data Secure standards, this sensor controls ABB-i-bus KNX® actuators automatically based on detected movement and ambient brightness. Finished in Anthracite Grey (RAL 7016) with an IP55 protection rating, it provides reliable environmental monitoring across diverse installation conditions. This device is part of our professional KNX Sensors range.

Equipped with Bluetooth transmission capabilities, the BM/A4.1-135 allows remote operation via the SmartConnect app on smartphones and tablets to control up to 10 KNX functions. The unit integrates dedicated brightness and temperature sensing channels, ground and rear-field creep-under protection, and a programmable status RGB LED supporting five distinct functions.

Key Features

• 4-channel KNX movement detector suitable for indoor and outdoor deployment.
• 280° sensor detection range with high-quality optics and creep-under protection.
• Bluetooth transmission standard for SmartConnect app connectivity.
• Integrated brightness and temperature sensing channels with 3 switching thresholds each.
• Optical orientation range: horizontal +90°/-60°, vertical +30°/-30°, level balancing +/- 30°.
• Direct bus connection using the included terminal block with zero battery requirement.
• KNX Data Secure compliance and IP55 rating in RAL 7016 Anthracite Grey.

Benefits

• Delivers comprehensive spatial coverage with a 280° detection range combined with ground and rear-field creep-under protection.
• Supports tailored environmental automation via 1 twilight/brightness channel and 1 temperature channel, each with 3 configurable switching thresholds.
• Enables smartphone and tablet remote management of up to 10 KNX functions through Bluetooth and the SmartConnect app.
• Provides precise mechanical adjustment options including +/- 30° level balancing, +90°/-60° horizontal optical orientation, and +30°/-30° vertical optical orientation.
• Ensures high operational security and environmental resistance via KNX Data Secure standards and IP55 protection.
• Features visual status indication using a programmable 5-function RGB LED.

Technical Specifications

Specification	Value
Extended Product Type	BM/A4.1-135
Product ID	2CKA006132A0428
Display Name	BM/A4.1-135
Number of Channels	4
Transmission Standard	Bluetooth
Manual Operation	Yes
Number of Batteries	0
Sensor Detection Range	280 °
Motion Detector Features	Creep-Under Protection
RAL Number	RAL 7016 – Anthracite Grey
E-Number (Norway)	4544332
E-Number (Sweden)	1740491
Offered with Takeback Services	Take Back for Recycling
Declaration of Conformity – CE	2CKA100000E5431
Declaration of Conformity – UK-PSTI	2CKA410000E0161
EAN	4011395319369
Building Information Modeling – BIM	9AKK108470A1777
Catalog Description	Busch-Watchdog PRO 280 ° Motion detector KNX anthracite
Security Standard	KNX Data Secure
Degree of Protection	IP55
Compatible Bus Systems	KNX (TP)
Product Range	KNX
E-Number (Finland)	2815904
Circular Design Principles Lifetime	2CKA000073B0220
ABB Site Meeting Group Waste To Landfill Target	Non-hazardous waste is sent to a landfill, where there is no alternative option available within 100km of a facility

Applications

• Outdoor perimeter, driveway, and entry detection requiring IP55 weatherproofing and 280° wide-angle monitoring.
• Indoor and outdoor light and climate automation tied directly to ABB-i-bus KNX actuators using brightness and temperature threshold triggers.
• Secure commercial and residential building automation projects requiring KNX Data Secure compliance and mobile app control.

Installation Notes

• Connect to the KNX bus line using the provided terminal block without requiring external batteries.
• Adjust the physical optical assembly using the mechanical settings: +/- 30° level balancing, +90°/-60° horizontal orientation, and +30°/-30° vertical orientation.
• Position the unit to optimize the 280° sensor coverage and maintain active ground and rear-field creep-under protection.

Developer Resources

• CE Declaration of Conformity: 2CKA100000E5431
• UK-PSTI Declaration: 2CKA410000E0161
• Building Information Modeling (BIM) Reference: 9AKK108470A1777
• EAN: 4011395319369 | Product ID: 2CKA006132A0428

FAQ

What is the detection coverage of the ABB BM/A4.1-135?

The device features a 280° detection range along with ground and rear-field creep-under protection. Explore more ABB KNX solutions for professional building automation projects.

How is physical alignment adjusted on this sensor?

The optical system supports level balancing of +/- 30°, horizontal orientation of +90°/- 60°, and vertical orientation of +30°/- 30°. For certificates and current technical files, refer to the official ABB documentation.

Can the detector be controlled using a mobile app?

Yes, it supports Bluetooth communication for remote operation via the SmartConnect app, allowing control of up to 10 KNX functions.

What security standard and IP rating does the BM/A4.1-135 have?

The product features KNX Data Secure protection and carries an IP55 degree of protection.

What is the exact product model?

The order/model code for this page is BM/A4.1-135. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by ABB.

Conclusion

The ABB BM/A4.1-135 Busch-Watchdog PRO 280 ° Motion Detector KNX offers flexible 4-channel movement sensing, integrated temperature/twilight thresholds, and IP55 protection in an anthracite finish. Supported by KNX Data Secure and Bluetooth SmartConnect functionality, it delivers precise control for professional KNX building automation projects. Installers and system integrators can review our installer purchasing support options.