1Control various automatic industrial control equipment, flash, buzzer, relay, microcontroller, or other power load equipment. 2The switch has the advantages of high accuracy, stable performance and long service life. 3An ideal choice for automatic chemical control equipment and power monitoring. 4Widely 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. 5Current 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, 40-400HzStartup Time: Switch Contact Capacity: Maximum: 0.5A@12-240VAC/DCOverload Capacity: +100%@30AThreading Hole Diameter: 19mmIndicator Light: Red and GreenInstallation Form: Flat InstallationShell Material: Fireproof ABSWorking Temperature: -20~55 CWorking Humidity: 0-90%, No CondensationIP Rating: IP30Size:Approx. 80 x 70 x 26mm / 3.15 x 2.76 x 1.02in Package List:1 x Sensing Switch1 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.