... manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor, thermocouple (TC and RTD), Panel Meter, Sensor Meter, ... Frequency Meter, flowmeter, Timer, Timer Relay, Solid State Relay, Proximi ty Sensor, Pressure sensor,load cell sensor, KNE KSC box, Rotary ... 086-13217608016(Barbara Guo) 86-13435730867(Peter Liao). DH series Digital Voltage and Ampere meter