Connectors and indicators - dilshan/electronic-limit-switch GitHub Wiki

PCB top side.

J1 - Limit switch connector for the upper level. The limit switch should be open when floating with liquid and closed if the liquid level is below the switch level. (This type of limit switch is also known as a normal-close type.)

J2 - Limit switch connector for the lower level. The limit switch should be open when floating with liquid and closed if the liquid level is below the switch level. (This type of limit switch is also known as a normal-close type.)

POWER - Power indicator.

J4 - AC mains interface. This terminal is equipped with pins to supply AC mains power to the system as well as relay input/output pins.

Wiring layout.

A - AC Mains input (Max. 240VAC) - Neutral

B - AC Mains input (Max. 240VAC) - Live

C - AC Motor or load (240VAC/5A or 30VDC/5A)