1、Control various automatic industrial control equipment, flash, buzzer, relay, microcontroller, or other power load equipment. 2、The switch has the advantages of high accuracy, stable performance and long service life. 3、An ideal choice for automatic chemical control equipment and power monitoring. 4、Widely used in substations, frequency conversion speed regulation devices, inverters, electroplating, electric locomotives, street lamp monitoring, coal mines and other automation industries which need current monitoring. 5、Current Induction Switches (CIS) are designed to monitor or detect the current of electrical equipment safely, simply and conveniently.Using the principle of electromagnetic mutual inductance of current. Features: Control various automatic industrial control equipment, flash, buzzer, relay, microcontroller, or other power load equipment. The switch has the advantages of high accuracy, stable performance and long service life. An ideal choice for automatic chemical control equipment and power monitoring. Widely used in substations, frequency conversion speed regulation devices, inverters, electroplating, electric locomotives, street lamp monitoring, coal mines and other automation industries which need current monitoring. Current Induction Switches (CIS) are designed to monitor or detect the current of electrical equipment safely, simply and conveniently.Using the principle of electromagnetic mutual inductance of current. Specification: Switch Type:Normally Open/Normally Closed(Optional) Power Supply:Self-Powered,No External Power Supply is Required. Starting Current / Frequency Range: 0.5-200A, 40-400Hz Startup Time: <0.1 Seconds Switch Contact Capacity: Maximum: 0.5A@12-240VAC/DC Overload Capacity: +100%@30A Threading Hole Diameter: 19mm Indicator Light: Red and Green Installation Form: Flat Installation Shell Material: Fireproof ABS Working Temperature: -20~55 °C Working Humidity: 0-90%, No Condensation IP Rating: IP30 Size:Approx. 80 x 70 x 26mm / 3.15 x 2.76 x 1.02in Package List: 1 x Sensing Switch 1 x Users Manual(Chinese&English) Note:Please note that the new type and old type of this product will be sent randomly and make sure you will not mind before ordering.