... for timing. any for counting.3) With power fail memory and key lock function.4) NPN PNP (Rst \ start \ pause)control ... models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer ... system etc. They are widely used in industrial control and measurement field, such as machinery, electrical cabinet, power ...