有一种神奇的电子控制模块 ,采用高性能的集成电路 ,可直接使用民用和工业交流电源 ,具有大功率控制和双稳态销定的功能 ,有相当广泛的应用领域。用途之一 :将该模块直接装入现有的普通电接点压力表内 ,就成为一种高科技节能型的自动化压力控制器 ,而且可以省却中间继电器及电 There is a magical electronic control module, using high-performance integrated circuits, direct access to civil and industrial AC power, with high-power control and bistable pin function, has a very wide range of applications. Use one: the module directly into the existing ordinary contact pressure gauge, it becomes a high-tech energy-saving automatic pressure controller, and can save the middle of relays and electricity