WTZK type temp, controller is an electrical switch that can make circuit close or open following change of controlled medium temp.
WTZK型温度控制器是可随被控介质温度变化而使电路闭合或断开的电开关。
The switching controller can be either a switch or a switching controlling circuit.
转换控制器可以是一个开关，也可以是一个转换控制电路。
The utility model belongs to a welding holder type controller used for controlling the on-off of a welder, mainly comprising a transformer, a contactor, a relay and a switch indicator circuit.
本实用新型属于一种控制焊机启闭的焊把式控制器，其主要由变压器、接触器、继电器、开关指示电路所组成。
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