AC10 Non-Contact Voltage Tester

The ac10 non-contact voltage tester is a pen-style, portable tool for detecting live ac voltage (typically 12v-1000v) without touching wires, using audible beeps, flashing red leds, and varying light intensity to signal presence, with features like flashlight, auto-off, and adjustable sensitivity for home/industrial use, often by brands like mestek or cem. It's designed for safety, indicating hot/neutral lines and faults in insulated wires, but only works for ac, not dc, voltage. 

Key Features & Functions

·         Non-Contact Detection: Senses voltage through insulation, ideal for quick checks on outlets, switches, and wires.

·         Visual & Audible Alarms: Flashing red light and beeping (faster/louder for stronger voltage) alert you to live wires; green light indicates no voltage.

·         Adjustable Sensitivity: High/Low modes help distinguish between industrial/low-voltage systems and general household circuits

·         Flashlight: Built-in LED for use in dark areas, a common feature on these testers.

·         Auto-Off: Shuts down automatically after about 15 minutes to save battery

·         Battery Powered: Usually requires 2x AAA batteries, which are not always included with the device.