BE/S8.20.2.1 ABB Binary Input 8-Fold 20V DC for High-Density Dry Contact Sensing in Professional KNX Systems
The BE/S8.20.2.1 is a high-performance building automation component from the ABB i-bus® ecosystem, engineered to deliver exceptional reliability, data integrity, and operational scalability for modern intelligent infrastructure.
Product Overview
As part of the globally recognized Binary Input range, this device represents the integration of advanced engineering standards with high-durability hardware, ensuring seamless coordination of critical building services such as lighting control, HVAC management, and system monitoring. Designed for modular or decentralized installation, the BE/S8.20.2.1 facilitates professional control architectures that reduce energy overhead and enhance occupant comfort.
Built with sustainable, halogen-free materials and future-ready firmware, this device is a foundational building block for high-performance infrastructure projects targeting LEED, WELL, and Green Premium certifications. It is specifically engineered for 24/7 mission-critical operations in high-end commercial office towers, healthcare facilities, and luxury residential estates.
Technical Specifications
| Specification |
Details |
| Product Model |
BE/S8.20.2.1 |
| Product Series |
ABB i-bus® Intelligent Systems |
| Communication Protocols |
KNX / BACnet IP / EnOcean |
| Interface Configuration & Channels |
8 channels with internal scanning voltage |
| Rated Operating Voltage |
Bus-powered |
| Power Supply |
Bus-powered via KNX line (DC 24-30 V SELV) or external auxiliary supply (model dependent) |
| Functional Logic & Sensing |
8 independently configurable inputs, support for long/short press logic |
| Network Topology Support |
Supports standard star, daisy-chain, and branch-based bus architectures |
| Wiring Interface |
Maintenance-free PUSH-IN or industrial screw terminals for secure connectivity |
| Operating Temperature |
-5°C to +45°C (standard indoor operational range) |
| Ingress Protection |
IP20 (Indoor installation environments) |
| Housing Material |
Halogen-free, Flame-retardant industrial grade polycarbonate |
| Certifications |
CE Marked, RoHS, REACH, KNX Certified, Green Premium, BTL Listed |
Application Scenarios
Commonly used in large-scale office floor monitoring. It aggregates 8 window or door contacts, providing the BMS with the occupancy data needed to optimize HVAC energy consumption.
