XANTECH CSM1 Current-Sensing Module (Discontinued by Manufacturer) Senses the power state of a component by detecting the difference in current drawn by the component when it is either on or off Variable threshold allows adjustment of current-sensing threshold (&gt;20 mAh to &lt;10Amps) to be within the on/off AC current range of the controlled component On/off status LED Also available for 230V AC/50 Hz Requires the Xantech CBCSM1 CSM1 current sensor connecting block