Ethernet / USB controlled

general purpose

 64 reed relays

The RelayBox includes 64 reed relays arranged in a 4 x 16 matrix. User may control the RelayBox using USB, Ethernet, digital inputs or the rotary knob located on the front panel. Programming the RelayBox is done using the C MXF4 API or Swift RelayBoxKit framework.


Control type

  • Ethernet, RJ-45 connector, 10/100/1000 Mbps
  • USB
  • 8-bit digital input, DB-9 male connector
  • Rotary Knob

Supported signals

  • Commuted signals ±60V, 8 Watts per relay
  • Four ports of 16 commuted signals each
  • DB-25 connectors

Physical dimensions and weight

  • Height: 1U or 45 mm or 1.75 in
  • Width: 442 mm or 17.40 in
  • Depth: 197 mm or 7.74 in
  • Weight: 1.6 kg or 3.5 lbs


  • Standard Operating Temperature: 10°C to 35°C
  • Storage Temperature: -25°C to 45°C
  • Relative Humidity for operation: 0 to 90% (non-condensing)


  • Line voltage: 100-240V AC
  • Frequency: 50Hz to 60Hz

Power consumption

  • Idle power: 4 W
  • Power consumption max: 14 W

Relays configuration

Controlling the RelayBox

Front panel rotary knob

The toothed rotary knob on the front panel allows manual control selection of two ports to join together. The front panel display shows the two selected ports.


Remotely controlled using the RelayBoxKit framework.

Allows easy programming with the modern Swift programming language on macOS, Linux and Windows.

MX Foundation API

MX Foundation 4 is the C library controlling almost all MAX Technologies devices, including the RelayBox.

Using other programming languages

Any programming environments supporting C language interop can control the RelayBox by writing appropriate wrapper to the C

MX Foundation API.



MAX Technologies Inc.

2051 Victoria Avenue

Saint-Lambert, Québec

J4S 1H1


Call: +1-450-443-3332

Toll-free from France: +33.800.915.497

MAX Technologies Europe

9 rue Ritay

31000 Toulouse


Call: +

Toll-free from USA: +1-844-695-1242

MAX Technologies USA Corp.

6750 N. Andrews Avenue

Fort Lauderdale, FL 33309


Call: +1-727-287-9255

© MAX Technologies