... Up to 3 output HH series 4/6 Digits Universal Intelligent TimerHH4 series, 48*48*80mm,dual line 4 digits ... the use-life of equipment). Specifications: Display digit & modes: 4 digit display( 6 digit for option), display modes settable: H, M, S, ... manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, ...