Extech 480172 AC Line Splitter 12V 10A PWM DC Motor Speed Controller What is the difference between

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Extech 480172 AC Line Splitter 12V 10A PWM DC Motor Speed Controller What is the difference betweenExtech 480172 AC Line Splitter The Extech 480172 AC Line Splitter is a precision instrument designed to safely split AC power signals for simultaneous measurement and monitoring across multiple test points without compromising signal integrity. Electrical engineers, HVAC technicians, and power quality specialists use this device to conduct non invasive AC current measurements on live circuits while maintaining isolation between measurement equipment.