... Cursor key, SMS input/output, SMS message input/output) ELC-6 Series Overview ELC-6 Series(Smart Relay) is the entry level ... 6 seriesConstant (Cursor key, SMS input/output, SMS message input/output)Analog (Analog MUX, PI Controller, Analog Ramp, Analog Math, Analog Math ... components used in conventional systems, such as timer, counter, relay, etc, or simple control applications as building and parking ...