A Temperature Controller is a device that is used to control a heater or other equipment by comparing a sensor signal with a set point and performing calculations according to the deviation between those values. Specification: Model number: ZSND-1000 Item : ZSND-1000 Temperature Controller Output : Relay Range : K O~399 C S/N: 20200507 Supply : 110/220VAC 50/60Hz Package includes: 1 x ZSND-1000 Temperature Controller