12-1000V AC Non Contact High Voltage Detector HT100  with CE certified Educational instrument  Dual sensitivity mode (12~1000V & 48~1000V)  Self-test function when power on (beep and red light)  LCD screen indicator (battery low, 4 level of sensitivity, AC signal)  Low power consumption  DisplayBargraph  Range of voltage detection  high sensitivity:AC12~1000V;Low sensitivity:AC48~1000V  frequency50/60Hz  Alarm mode:Sound and light alarm  Probe shape:Prolate shape  Backlight:Red and green double color backlight  Live and Neutral:According to backlight color change: green is neutral wire; red is live wire.  Signal intensity display:Four level sensitivity of bargraph  Signal intensity indication method:sound from slow to fast;backlight from green to red;bargraph from low to high  Flashlight  No operation, no sensing signal will shut down automatically in about 3 minutes.  Auto power off:No operation, no sensing signal will shut down automatically in about 3 minutes.  Low-battery indication√  Power Supply2x1.5V AAA batteries  WeightApprox. 45g  Size155mm x 20mm x 20mm  Safety ratingEN61010-1,-2-030;EN61326-1,CAT III 1000V