Features: LCD backlight screen, you can see data at a glance. Automatic identification of POE voltage(af/at standard) power supply polarity, jumper mode, 0-60V voltage test range. It can test the real-time power consumed by PD devices in the POE power supply system. Loop test function, direct line with the switch, switch indicator steady on, smooth line. Power test function, can test DC power, test voltage, current, power between power adapter and electric equipment. High standard RJ45 interface, to lock the crystal head tightly during testing, stable and durable. Specification: Emitter LCD display screen: 128*64 dot matrix, with backlight board Button: 5 function buttons+1 power button Interface: 4*RJ45, 2*DC POE Test: Test range: DC 5-60V non-standard/standard POE switch Power test range: 0-18W Power Test: Voltage test range: DC 0-60V Current test range: 0-3A Power test range: 0-180W Loop test: Compatible with 10M/100M/1000M switch Battery requirement: 3*AAA batteries(not included) Input power protection: DC48V 5mA Max working current: 80mA Size: 12.5 * 6.9 * 2.85cm /4.92 * 2.72 * 1.12in Remote Adapter Interface: RJ45 Input power protection: DC48V 5mA Size: 6.5 * 3.7 * 2.3cm /2.56 * 1.46 * 0.91in Packing list: 1 * Emitter 1 * Remote adapter 1 * 8P adapter cable 1 * Toolkit 1 * User manual