... step control. 2011---HC series Expert Timer for Electrical life test(Laboratory)HH8 series, 48*96*80mm,single line 4 digits ... manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, ... the exchangeof needed goods. you are welcome to contact us at any time, we are ready to offer you the immediate ...