These compact single point level sensors and switches are economical solutions for reliable and accurate level detection. They are designed to detect the presence of liquid (but not oil) at a specific location in vessels containing refrigerant. The computer-compatible, low-voltage signal output of the level sensor can be used directly with plant computers, PLCs, solid-state relays or other controllers. The relay output from the level switch is suitable for direct connection to solenoids, alarms, and computers.