SAFE AND EXACT TEST PENCI MEASURING RANGE:AC DC 12V-250VSHELL PRESSURE 500V,WORKING CURRENT<0.5MADIGITAL DISPLAY:12V 36V 55V 110V 220V5-SPEED LED LIGHT SHOW:WILL BE LIGHT WHEN MORE 3V VOLTAGE ELECTRIC FIELDBT9002BT9003-BT9004BT9005BT9006MEASURING RANGE:DC 6V-24V,ONLY BE USED WITHIN VOLTAGE DC24VBT9007MEASURING RANGE :AC 100-500VBT9008 MEASURING RANGE:AC 100-500V TEST PENCIL