Milestone ML 4RLC 4 Relay Controller (Rack Mount)

The Milestone ML 4RLC is a four-relay controller in a 19-inch 1U rack-mount format, built for professional AV control rooms and automation installations. It switches 230V AC loads through four independent relays and can be operated from the front-panel keypad, an optional remote keypad, or an RS232C interface, giving installers centralised control of lighting, projection systems, screens and other appliances from a single rack-mounted unit.

Key Features
• Four independent relays for switching 230V/8A devices
• 19-inch 1U rack-mount chassis fits standard equipment racks
• Front-panel keypad selection for relays one to four
• RS232C interface plus remote keypad port for flexible control
• LED indication for each relay channel and power status
• Battery-backed memory keeps the last selected state
• Optically isolated RS232C and relay circuits for safety
• Plug-and-play installation for quick system integration

Applications
• Auditorium and conference room lighting and presentation control
• Rack-based AV and broadcast equipment power management
• Multimedia demo and public address system control
• Electrical automation in commercial and institutional buildings
• Motor forward and reverse control with paired relay operation

Summary
The Milestone ML 4RLC rack-mount relay controller brings four relay channels into a standard 19-inch 1U unit, making centralised power control clean and space-efficient. With local, remote and RS232C control plus LED indication and battery-backed memory, it suits integrators managing lighting, displays and appliances across professional installations.