AstroAI Tester, 4000 Count Digital Multimeter, Voltmeter, Circuit Tester, Voltage Tester, Auto-Ranging, Non-Contact, Voltage, Current, True RMS, Resis

[Widely Applicable] The Astro AI4000 Count Tester accurately measures AC/DC voltage up to 600V, current up to 10A, and resistance up to 40MΩ. It can be used for continuity, diode, and voltage testing. It features 1.5V and 9V battery test modes, making it easy to test a variety of batteries. [Multifunctional] Supports true RMS, AC/DC current, AC/DC voltage, auto-ranging, continuity, resistance, diode, capacitance, and caustic measurements. It also features NCV (non-contact voltage detection) for added safety. [Convenient] The compact size makes it easy to carry. It features a rear stand and built-in test lead storage. A low-battery prompt and a data hold button hold readings for easy reading. It automatically powers off after 15 minutes of inactivity. The large backlit LCD screen allows for flexible use in dimly lit areas. It can be freely switched to suit various use cases. [Safety] Safety is our top priority, and the NCV function minimizes exposure to live electrical wiring. It works with outlets, sockets, terminals, etc. It has overload protection and thick protective rubber, making it shock-resistant and effectively preventing damage from drops. [Fire Wire Detection] Use the red test lead to detect live wires. This unique feature tests for the presence of live wires. When a live wire is detected, the digital tester will sound an audio alarm.