Draper-Non-Contact-Ac-Voltage-Sensor-Draper-71389-Useful-tool-for-detecting-live-circuits-location-of-breaks-in-cabling-fault-finding-&-low-voltage-Adjustable-sensitivity-Voltage-range-5-1000V-Audio-visual-signal-indicates-voltages-present-Powered-by-4-x-LR44-batteries-supplied-Full-instructional-leaflet-included-Display-packed-Draper-71389-Non-Contact-Ac-Voltage-Sensor