【Split Core Current Transformer Clamp】Transformer current detection up to 100 A. No physical contact with live wires, eliminating the risk of electric shock. Just release or close the latches on the side of the sensor to open and close the CT sensor. 【Energy Monitor】 Install in the electrical circuit panel of your home to monitor the power consumption of household appliances or rooms. 【6-month Historical Data Hold】Automatically save your electricity usage data when you remove appliances or have a power outage. The data can be saved for up to 6 months and exported to a file for viewing. 【Support Contactor Control】POWCT has a dry contact relay with a rated current output of 2A which is used with a contactor to realize switching control of the load. 【Safe & Reliable】Go through various rigorous tests, including lightning and surge tests, short circuit tests, drop tests, salt spray tests, tests in extremely harsh environments, etc. Products you can 100% trust.