Feature 1、Non-contact and pen-shaped design, easy to carry and operate. 2、It can detect the AC voltage of 12V ~ 1000V or 48V ~ 1000V. 3、Red/green light signal strength indication: low, medium and strong. 4、Includes LED flashlights for easy use at night or in dark environments. 5、Alarm mode: acoustic light and traffic light alarm. Features: Non-contact and pen-shaped design, easy to carry and operate. Red/green light signal strength indication: low, medium and strong. Includes LED flashlights for easy use at night or in dark environments. Alarm mode: acoustic light and traffic light alarm. If there is no operation, automatic shutdown in 15 minutes. Widely used in industrial power supply and family lines surveys. Specification: Brand: MESTEK Material: ABS Weight: 46g/1.6oz Color: Black Alarm Mode: sound light and traffic light alarm Automatic Shutdown: Yes Battery Deficiency Indicator: Yes Security level: CAT III 1000V Power: 2*1.5 V AAA battery (NOT included) Size: 160*28*20mm/6.3*1.1*0.8inch Package List: