Scientech Technologies Pvt. Ltd. Supplies 300 gm Traffic Light Control PLC Application Modules, ST-2423B. Scientech Technologies Pvt. Ltd. Is an ISO 9001:2000 certified company and is the manufacturer of test and measurement instruments. The 300 gm Traffic Light Control PLC Application Modules help the students and practicing engineers in having the practical experience of the principles and application of programmable logic controllers. In this system, LEDs are used to control traffic light and the apparatus has been attached with output of PLC. This 300 gm Traffic Light Control Modules is also used in four way traffic controlling. Technical specifications of this 300 gm Traffic Light Control PLC Application Modules are as follows: