Programmable electric timer Industrial used timing/time delay device Count up/down,0.1%FS Range:0.01S-999999H ... life utility: Machnical life: more than million times, Electric life: 100 thousand times it does not depends on the hours. Models ... different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, ...