What's in the box:

Mini Square Digital Volt-ammeter Voltammeter Ammeter Voltmeter Cymometer Three LED Display Voltage & Current & Frequency Meter Indicator Monitor AC Panel Meter AC60-500V AC0-100A 20-75Hz (Green)

Features:
Multifunctional mini digital tester signal indicator, it can be used to measure alternating current, voltage, and frequency simultaneously.
Wide measuring range of AC0-100A, 60-500V, and 20-75Hz.
High brightness easy-to-read 3-digit LED display provides a clear readout.
2.2*2.2 inch square panel with cylindrical main body.
It can be used as signal indication, alarm signal and accident signal in electric power, telecommunication, machine tool, ship, textile, printing and mining machinery.

Specifications:
Color: Blue / Green / Red / White / Yellow (Optional)
Material: Electrical components
Voltage: AC60-500V
Current: AC0-100A
Frequency: 20-75Hz
Item Size: 55 * 31 * 31mm / 2.17 * 1.22 * 1.22in
Item Weight: 39g / 1.38oz
Package Weight: 44g / 1.57oz
Package Size: 7 * 3.5 * 3.5cm / 2.76 * 1.38 * 1.38in

Packing List:
1 * Digital Meter