Trendnet's Inline PoE Tester, model TC-NTP1, is a comprehensive PoE cable tester for network professionals. This compact tool accurately tests PoE++, PoE+, PoE, and passive PoE technologies. The TC-NTP1 PoE cable tester works on active connections, and is designed to sit inline between the PoE source and PoE device. The PoE cable tester then displays real-time PoE information such as wattage, voltage, and amperage for that connection. Testing ModesThe TC-NTP1 has three testing functions: T-mode (for testing ports on your PSE device to determine the PoE switch's or injector's PoE type, and voltage output); N-mode (for non-standard passive PoE devices); and I-mode (for PoE inline testing, displaying voltage, amperage, and wattage of the connected PD)Step ButtonThe convenient step button on the PoE cable tester allows users to cycle through voltage, amperage, and wattage readouts. It also allows users to lock the display to a specific readout (e.g. wattage) for real-time monitoringCompatibilityThe PoE cable tester is compatible with IEEE 802.3af/at/bt PoE devices up to 100W, and non-standard passive PoE devices from 11V – 60V Features: Comprehensive PoE cable tester for network professionals Three testing modes with convenient dip-switch toggle Troubleshoot PoE issues in real-time For use with IEEE 802.3af/at/bt, and non-standard passive PoE devices PoE inline testing measures voltage, amperage, polarity, and wattage of the connected PD Four digit 7-segment LED display for clear and accurate readings User-friendly design with battery-free operation Compact and lightweight for on-the-go testing NDAA compliant