The SELCO Indicator Panel H1500 is a compact microprocessor based indicator panel for use with PLCs or other systems which are able to send and receive alarm indications via RS485 MODBUS (RTU).

The H1500 provides an easy and cost effective solution for clear indications at local or remote locations. Communication with the units takes place on a 2-wire RS485 bus with a cable length being up to 1,000 meters. The H1500 supports the MODBUS (RTU) protocol.

The red LEDs can be programmed via the bus to flash quickly, slowly, or to indicate steady light. The H1500 also includes MODBUS commands to reset of all LEDs and make an external lamp test. The LEDs can be dimmed from 0 to 100 % as required for marine applications.