The Marantec Multi‑Bit 131 Wall Transmitter is a compact, wall-mounted controller for Marantec garage doors. It provides reliable, secure wireless operation with dual buttons for multi-function control. Ideal for indoor installation in homes or commercial garages.
The Marantec Command 131 is a:
- Wireless wall-mounted transmitter (not a wired switch)
- Works as a fixed indoor remote control
- Sends commands via Marantec Multi-Bit radio system
- Used for:
- Garage doors
- Industrial doors
- Gate automation systems
It behaves like a “wall remote” rather than a physical wired button.
Radio System (Multi-Bit)
From official Marantec documentation:
- Multi-Bit RF technology
- 48-bit encrypted signal (~70 million code combinations)
- Unidirectional communication (transmitter → receiver only)
- Each command is sent as a secure coded RF signal
Frequencies
Must match receiver frequency exactly.
Functional Description
How it works
- User presses wall button (Channel 1 or 2)
- Internal transmitter encodes Multi-Bit signal
- RF signal is sent to receiver
- Receiver triggers door controller input
Key Features
- 2 programmable channels (buttons)
- Each button can be assigned to:
- Different doors
- Open/close/stop functions
- LED confirmation indicator (red LED)
- Can copy transmitter signals via programming cable (service function)
Electrical / Hardware Specs
Power
- 1 × CR2032 lithium battery (3V)
Operating conditions
- Temperature: −20°C to +60°C
- Battery-powered (no wiring required)
Physical design
- Size: 80 × 80 × 27 mm
- Wall-mounted housing
- Integrated antenna
- Push-button surface interface
Channels & Control Logic
- 2 independent channels
- Each channel can be assigned to:
- 1 door
- 1 function (e.g. light, gate, second operator)
Output type
- Wireless RF command only
- No relay or physical switching inside unit
Programming & Pairing
Pairing method
- Learned into a Multi-Bit receiver (CS300, CS320, plug-in receivers, etc.)
- Uses “learn mode” on controller
Copy function
- Some versions allow:
- Direct cloning of another transmitter via cable contacts
Build & Installation
Mounting
- Screw-mounted wall installation
- Indoor rated (IP20)
Materials
- ABS plastic housing
- Compact push-button front panel
Compatibility
Works with:
- Marantec Multi-Bit receivers:
- CS300 / CS320 controllers
- Digital plug-in receivers
- External Multi-Bit RF modules
Compatible remotes:
- Digital 302 / 304 / 306 series
- Other Multi-Bit transmitters on same frequency
Security model
- Fixed-code encrypted system (not rolling code)
- ~70 million possible codes
- Secure but older than newer bi·linked systems
Technical Summary
- Type: Wireless wall transmitter
- Channels: 2
- Frequency: 433 MHz or 868 MHz
- Protocol: Multi-Bit (48-bit encryption)
- Power: CR2032 battery
- Range: RF line-of-sight (typ. 30–100 m depending on environment)
- Protection: IP20 (indoor use)
- Size: 80 × 80 × 27 mm
(The Company reserves the right to amend product specifications and information without notice.)
