The Milestone ML 8RLC LV is an eight-relay controller for the reliable switching and control of low-voltage electrical loads between 3V and 48V from one control point. Intended for auditoriums, boardrooms, showrooms and electrical automation setups, it lets an operator manage up to eight independent devices through the front-panel keypad, a remote keypad, contact closure, or a programmable RS232C interface without walking between appliances.

Key Features
Eight independent relays for switching low-voltage (3V to 48V) loads
Front-panel keypad selection for direct local operation
Remote keypad or contact closure via D9 male connector, operable up to 50 metres away
RS232C interface via D9 female connector (9600 baud, 8-bit, 1 stop bit, no parity) with optional RS422/RS485 support
Battery-backed relay status memory – relay states are restored automatically after a power cycle
Optical isolation between the RS232C port and relay circuits for safer, more reliable operation
Four DIP-switch exclusive relay pairs for forward/reverse motor control
LED indication for each relay and power status
Unit identifier DIP switch – up to 48 relays across six controllers can be managed on a single RS232C line

Applications
Centralised AV and projection system control in large rooms and auditoriums
Multi-zone low-voltage lighting control in offices, showrooms and event spaces
Motor forward/reverse control for curtains, screens, gates and blinds
Building automation and facility management integration via RS232C
Retail, exhibition and display lighting and equipment control

Summary
The Milestone ML 8RLC LV is a robust low-voltage relay controller that gathers eight switching channels in one compact table-top unit. With flexible local, remote and RS232C control, battery-backed status memory and optical isolation, it delivers reliable, centralised switching for professional AV and automation installations.