Scientech Technologies Pvt. Ltd. Manufactures Conveyor Control by PLC, ST2425. Scientech Technologies Pvt. Ltd. Is an ISO 9001:2000 certified company and is the manufacturer and supplier of test and measurement instruments. The Conveyor Control by PLC is a single stage unit which has a conveyor and mounting assembly of two sensors. It comes with two types of metal & non-metal boxes travel on conveyor for counting and detecting the type of box. It has inputs to PLC like on or off, auto/manual control, etc. Salient features of this Conveyor Control by PLC are given below: