... the advanced SMT technology, Modular Structure, to be designed high quality and performance, universal use, to be aimed to measure and ... set and configured flexibly, up to four stages.Could select relay, SSR drive, SCR as control methodCould select 5VDC, 12VDC, 24VDC ... W1: contactless SCR output (100-240VAC/0.2A)G: Solid-state relay slaving voltage (DC12V/50mA output)K1: single-route SCR zero crossing ...