3.5inch LCD Display with Flashlight: The sender of this line finder adopts a LCD backlight display flashlight allows you to turn it on when the light is low. Multimeter Function: This function includes direct current and AC voltage and current measurement, resistance, continuity, diode, NCV, temperature measurement. Multifunctional Cable Tester: This cable tester has the function of analogue tracing, cable mapping, PoE voltage measuring, digital tracing volumes and sensitivity adjustable, automatic shutdown, and cable length self-calibration function. Cable Tracing & Signal Changeable: The cable tracing function can quickly and efficiently find the target cable in number of cables. This function can be used in telephone systems, computers networks, BNC cables and other metal network cables. And support set the frequency for using on tracing. Cable Length & Pairing Check: to measure cable length, test open circuit, short circuit, cable sequence and cable break. Voltage Test: Check the polarity and voltage of battery or cellphone lines. Continuity Test (OHM): Check open circuit or short circuit of cellphone lines(cellphone line should not be connected to any power source). Cable Length Test: This function can apply to different metal cables with at least 2 cores including network cables, telephone lines and BNC cables. With cable length measuring ranges of 600M. POE Test: POE testing can check cable mapping, polarity and voltage of POE network switches. Model:ET628 Host: built-in lithium battery, 1250mAh (included) Cable Finding Pen: 1 x 9V battery (NOT INCLUDED) Display: 3.5inch LCD display with white backlight ET628: Multimeter Function, Red Laser Pen, ACV, DCV, , Alternating Current current, Resistance, Continuity Buzzer, Diode, Temperature, Coaxial Cable Length Measurement, Network Cable Short Circuit and Circuit Break Test Color: Red Material: ABS Package Contents: 1 x Host 1 x Red Pen 1 x RJ45 Cable 1 x Clip Cable 1 x Multimeter Pen 1 x K Probe Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.