Features: 1) Contact AC voltage test: 12V to 250V 2) AC voltage display by LCD: i.e. 12V, 36V, 55V, 110V, 220V (working without batteries) 3) Non-contact AC voltage: display by LCD, find phase line, ground line and breakpoint of phase line 4) DC voltage / polarity check: 1.5VDC to 36VDC 5) Instant sense and display Packing: Individual double blister packed 12pcs/inner box, 96pcs/ctn