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 interface :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 Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!