Features: 1. Test Criteria: Test information on standard PoE devices such as standards, supply voltage, power polarity and mode. 2. Detection voltage: Determine the power supply voltage, power polarity and mode of non-standard PoE equipment. 3. Detecting the network: Check for shorts, crossovers and open circuits in the network cable. 4. Detect current: Test the current, voltage and power consumed by the DC appliance. 5. Detection switch: Loopback test function of the switch. Descriptions: 1. Small size, easy to carry and use. 2. Used to detect network voltage and current as well as lines. Specification: Indictor :LCD 128x64 mm, with back light Continulity function:Cable types CAT5,CAT6 Check UTP/STP cable: YES Cable short indicate: YES Max testing range: 600m Wire mapping: Emitter +Remote,Emitter + switch/routor PoE function Test range: DC5-60V POE switch Standard identify :802.3af/at ( standard/non-standard) Test range power :0-18W Output  :YES Power function:Voltage test range DC0-60V Current test range: 0-3A Power test range :0-180W Input voltage protection: DC48V 5mA Max working current :≤80mA Loopback: Compatible with 10M, 100M, 1000M switch Power supply: 3*AAA Color: black Size: 420*110*185mm Package Included: 1 x network tester 1 x manual