ABB BM/A4.1-131 KNX Movement Detector 4 Channels IP55

Description

Introduction

The ABB BM/A4.1-131 is a 4-channel KNX movement detector engineered for indoor and outdoor monitoring applications. Powered via an integrated KNX bus coupler at 24 V bus voltage with a 0.3 W power consumption and 12 mA current, this device enables automatic switching of ABB-i-bus KNX actuators based on detected motion, outdoor temperature, and ambient light levels. Built to IP55 protection standards, it operates reliably across a wide outdoor temperature range from -25°C to 55°C. This device is part of our KNX system components range.

Equipped with 4 PIR sensors, a 280-degree detection angle, and a surveillance density of 110 sectors with 440 switching segments, the BM/A4.1-131 provides coverage up to 16 meters frontally and laterally at a standard installation height of 2.5 meters. System integrators and procurement specialists should cross-reference exact SKU specifications, BOQ requirements, and official ABB documentation prior to ordering to prevent wrong orders.

Key Features

• 4 motion channels, 1 twilight/brightness channel with 3 switching thresholds, and 1 temperature channel with 3 switching thresholds.
• Frontal and lateral detection range of 16 meters at a recommended installation height of 2.5 meters.
• Adjustable switch-off delay ranging from 10 seconds to 18 hours with a brightness-independent test mode.
• Twilight measurement range of 1 to 1,000 Lux and brightness measurement range of 1,000 to 100,000 Lux.
• Programmable status RGB LED capable of indicating 5 distinct status functions.
• Integrated dismounting protection and ground/rear-field detection capabilities.
• Customizable detection range masking via included cut-to-size protective foil.

Benefits

• Wide 280-degree sensor angle powered by 4 PIR sensors and 110 sectors with 440 switching segments for full area coverage.
• Direct bus connection via an integrated KNX bus coupler operating at 24 V without requiring an additional external power supply.
• Flexible physical positioning through +/- 30° level balancing, +90°/-60° horizontal orientation, and +30°/-30° vertical optical orientation.
• Durable IP55 weather resistance suitable for outdoor temperature environments ranging from -25°C to 55°C.
• Wireless remote control via Bluetooth and SmartConnect app for managing up to 10 KNX functions and parameter settings.
• Automatic optical stabilization incorporating automatic range stabilization, interference suppression, and dazzle-proofing.

Applications

• Indoor and outdoor building perimeters requiring motion detection and brightness-dependent actuator switching.
• KNX building control systems requiring outdoor temperature measurement and ambient light level sensing.
• High-security or commercial access zones needing ground detection, rear-field surveillance, and dismounting protection.

Installation Notes

• Mount the unit at the recommended installation height of 2.5 meters and connect to the KNX bus using the enclosed terminal block.
• Programming and configuration require connected bus voltage and the native ETS application.
• Adjust optical alignment using physical level balancing (+/- 30°), horizontal orientation (+90°/-60°), and vertical orientation (+30°/-30°).
• Tailor the precise detection field by trimming and applying the enclosed protective foil over unwanted sensor segments.

FAQ

Does the ABB BM/A4.1-131 require an auxiliary power supply?

No, the device operates directly on a 24 V bus voltage using its integrated KNX bus coupler with a low power consumption of 0.3 W. Explore more ABB building automation products for professional building automation projects.

What is the detection area and sensor coverage angle?

The sensor features a 280-degree angle with 4 PIR sensors, providing 16 meters of frontal and lateral detection at an installation height of 2.5 meters. For certificates and current technical files, refer to the manufacturer technical documentation.

Can device parameters be adjusted without ETS?

Basic parameters such as switch-off time, brightness thresholds, permanent on/off, and test mode can be adjusted remotely via Bluetooth using the optional ABB SmartConnect app, though full configuration requires the native ETS application.

What operating environment limits apply to this detector?

The IP55-rated device operates in ambient temperatures between -25°C and 55°C, with a storage temperature range from -25°C to 70°C.

What is the exact product model?

The order/model code for this page is BM/A4.1-131. Match it against project documents before purchase.

Who is the manufacturer?

This product is manufactured by ABB.

Conclusion

The ABB BM/A4.1-131 KNX movement detector delivers robust, 4-channel indoor and outdoor motion detection complete with integrated brightness and temperature monitoring. Featuring flexible optical alignment, SmartConnect app control, and IP55 protection, it provides high reliability for automated KNX installations. Installers and system integrators can review our become a KNX dealer options.

Always confirm project BOQ specifications and exact model identifier BM/A4.1-131 against official documentation prior to order placement.