... output control. HH series 6 Digits Programmable Time Relay/Time switch HH4 series,48*48*80mmHH8 series,48*96*80mmHH9 series ... manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor, thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor ... (Peter Liao) HH series 6 Digits Programmable Time Relay/Time switch