The DorGo 800 receiver is a radio frequency (RF) control receiver module used with the DorGo 800 garage door operator.

• Receives signals from handheld remotes
• Converts RF signal → electrical control signal
• Triggers OPEN / STOP / CLOSE or impulse input on controller

It operates on Marantec’s Multi-Bit wireless system (important).

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Wireless Technology (Core System)

Multi-Bit Radio System

From Marantec:

• 48-bit encryption (≈70 million possible codes)
• Unidirectional communication (remote → receiver only)
• Fixed-code architecture (not rolling code)
• Reliable signal transmission for door automation

Frequencies Used

• Typically:
  • 433.92 MHz (common in South Africa)
  • 868 MHz (EU variants)

Must match transmitter frequency exactly.

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Functional Description

How It Works

1. Remote button pressed
2. RF signal transmitted (Multi-Bit coded)
3. Receiver decodes signal
4. Relay output activates
5. Door operator executes command

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Electrical & Interface Design

The DorGo 800 receiver follows the same architecture as Marantec Multi-Bit receivers like:

• Marantec Digital 343.2
• Marantec Digital 339.2

Typical Electrical Specs

• Operating voltage:
  • 12–24V AC/DC
• Control interface:
  • Relay output (potential-free contact)
• Contact rating:
  • ~24V AC / 1A
  • ~30V DC / 1A

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Channels & Control Logic

Channel Types

• 1-channel (basic open/close)
• 2-channel (multiple doors or functions)

Relay Modes

• Impulse (momentary trigger) → most common
• On/Off (latched output)

 Each channel can be independently configured

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Memory & Coding

• Stores coded transmitter IDs
• Typical memory:
  • 1–15 transmitters (small modules)
  • More in advanced receivers
• Reprogramming:
  • Old remotes can be deleted
  • New codes assigned for security

Multi-Bit allows easy re-coding if a remote is lost

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Environmental Specs (Typical)

• Temperature range:
  • -20°C to +60°C
• Protection rating:
  • IP20 (indoor)
  • IP65 (if external housing version)

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Physical Characteristics

Typical Marantec receiver module (applies to DorGo unit):

• Compact enclosure (~70 × 64 × 35 mm)
• Wire antenna or integrated antenna
• DIN / panel mount or internal mounting

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Integration with DorGo 800 Operator

From Dortech DorGo system:

The DorGo 800 motor:

• Uses 24V control electronics
• Accepts RF receiver input via control board
• Includes remotes using Multi-Bit compatible system
• Operates at 433 MHz rolling-code (Dortech spec) — but note:
   Marantec Multi-Bit itself is fixed-code (important distinction)

In practice:

• DorGo units may use hybrid or rebadged radio modules
• Receiver is either:
  • Integrated on PCB
  • Or external plug-in module

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Compatible Devices

Transmitters

Examples:

• Digital 211 / 212 / 304
• Marantec Digital 318
• Marantec Digital 392

Other Inputs

• Wall push button
• Key switch
• External automation system

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Important Engineering Notes

Security Reality

• Multi-Bit = fixed code system
• Not as secure as modern rolling-code systems

 Still widely used due to:

• Reliability
• Simplicity
• Compatibility

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Compatibility Rule (Critical)

A receiver will only work if:

• Same frequency (433 vs 868 MHz)
• Same radio system (Multi-Bit vs bi·linked vs DM7S)

 Mixing systems = no communication

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Practical Use Cases

• Garage doors (DorGo 800)
• Gate automation
• Retrofitting older motors
• Multi-door control systems