... RoHS Certified *Constant (Cursor key, SMS input/output, SMS message input/output) ELC-6 Series Overview ELC-6 Series( ... Series exclude expansion feature , NO keypad panel , NO PWM output & High Speed pulse counting capabilities, merely incorporating digital IO, ... 6 seriesConstant (Cursor key, SMS input/output, SMS message input/output)Analog (Analog MUX, PI Controller, Analog Ramp, Analog Math, Analog ...