Märklin 60881 s88 Digital Feedback Module for 16 Contact Inputs – Green/White

The Märklin 60881 s88 decoder stands apart from conventional occupancy detectors by delivering 16 galvanically isolated feedback inputs in a compact, daisy-chainable module. Instead of relying on complex bus addresses or proprietary wiring, it uses the proven s88 feedback bus to report track occupancy and switch positions directly to your Märklin Central Station, Control Unit, or Interface. This makes it an ideal building block for automated block control, hidden staging yards, and signal interlocking on medium to large layouts.

Highlights

• 16 independent feedback inputs for contact tracks, reed switches, or current sensors
• Standard s88 bus interface with input and output connectors for easy daisy-chaining
• Compatible with Märklin Digital systems supporting s88 (Central Station, Control Unit, Interface)
• Robust plastic housing in green and white, designed for fixed installation under the layout
• No separate power supply needed – powered directly via the s88 bus

In daily use

Install the 60881 close to the track sections you want to monitor, then connect up to 16 occupancy detectors or reed contacts to the screw terminals. The module immediately forwards any change of state to the digital command station over the s88 bus. Because multiple modules can be linked in series, you can expand feedback coverage incrementally without rewiring the entire layout. The clear colour coding and labelled terminals simplify troubleshooting, while the durable housing protects the electronics from dust and accidental contact.

Full specifications

• Product type: Digital feedback module
• Feedback bus standard: s88
• Number of feedback inputs: 16
• Input signal types: Contact tracks, reed contacts, current sensors
• Output interface: s88 bus (daisy-chain capable)
• System compatibility: Märklin Digital, Central Station, Control Unit, Interface (with s88 support)
• Functionality: Track occupancy detection, switch position reporting
• Data protocol: s88
• Power supply: Via s88 bus from digital system
• Daisy-chain support: Yes
• Operating environment: Indoor model railway layouts
• Housing material: Durable plastic
• Colour: Green, white
• Recommended age: 15+ years
• Connectivity: 2x s88 bus connectors (input/output), 16x input terminals
• Installation: Fixed installation on model railway layout

Final note

For modellers who demand reliable, expandable feedback without the complexity of modern bus systems, the Märklin 60881 remains a trusted workhorse. Its straightforward s88 protocol and solid construction ensure years of trouble-free operation on any digitally controlled layout.