Expanders for connecting multiple sensors via RS485

RS485 expanders are used to increase the number of RS485 bus terminals on FIEDLER telemetry stations, data loggers, and control units. They are used in situations where it is necessary to connect a large number of sensors or transducers to a single RS485 communication line without complex wiring. FIEDLER offers both DIN rail-mount versions and compact designs for smaller control panels or enclosures.

Increased number of RS485 connection points
Ability to connect multiple sensors to a single bus
Options for DIN rail and compact installations
Simpler cabling and maintenance
Compatibility with FINET / RS485 systems
Suitable for telemetry and industrial applications

Non-binding inquiry

Description

The following models are available:
- EXSV/DIN-RS485 – 4-channel terminal block expander for DIN rail mounting
- EXSV/DIN/K-RS485 – DIN version with a multi-conductor connection cable
- EXSV/K-RS485 – compact dual-channel terminal block expander for smaller enclosures without a DIN rail

The expanders are commonly used with C8, H3, H7, Q2, or E2 stations. The DIN version, EXSV/DIN-RS485, measures 35 × 89 × 34 mm and is designed for standard mounting on a 35 mm DIN rail. The compact EXSV/K-RS485 version includes a 30-cm 4-wire cable permanently attached to the unit.

Applications

Connecting multiple sensors to data loggers
Expanding telemetry stations
Water and environmental monitoring
Industrial control systems
Control panels and process enclosures

Technical specifications

Technical Specifications	Value
Models	EXSV/DIN-RS485, EXSV/DIN/K-RS485, EXSV/K-RS485
Bus Type	RS485
Mounting	DIN rail / compact
Number of Expansions	2× to 4× depending on variant
Wiring	terminals / hardwired
Compatibility	C8, H3, H7, Q2, E2
Application	indoor installation / control panels

Downloads

Price List Cenik 2026 V101 Datasheet H1 Datasheet H7 0 Datasheet C8 Datasheet Q2 0 Datasheet Stela 3v2