Voltage Electronic Monitor
工作原理及性能:工作电压50V～300V，50Hz在电压范围165V～260V 时继电器开启，此时红灯常亮。当电压低于160V或高于260V时，继电器关闭，同时红灯闪烁。继电器动作延时为2秒。
Work Principle and Features:Work voltage 50V-300V,50Hz.Within the range of voltage 165V-260V the relay is opened and the red lamp lights.When voltage is lower than 160V or higher than 260V,the relay is closed and the red lamp flashes. The delaying time of the relay is 2 seconds.
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