Tecmark Series ETS1000 Electronic Thermostats are temperature regulating devices specifically designed around rigorous parameters. The Series ETS thermostats integrate a solid state thermistor to an electronic comparator circuit for accurate temperature control. All input and output connections are made via 1/4" male quick connect terminals. The Series ETS are transient protected and provide fail-safe operation if the sensor wires are severed or shorted. They are designed and engineered to exceed 100,000 cycles under full mechanical, electrical and thermal loads.