NON-CONTACT VOLTAGE DETECTOR
Categories : Series 9 Generally Electronic Project ,  Measurement & Tester , 
Before cutting or drilling into a wall use the FK946 to check if there is any embedded live AC supply wires. This non-contact voltage detector circuit will detect if there is an AC voltage present up to a distance of 1cm. A bright red LED will blink or light up indicate the proximity of live wires.
Technical Specification