Features: Transmitter Testing Function: including cable continuity testing, cable scan, port flashing, cable length measurement, PoE test, QC testing for crystal head, OPM(optical power meter) and VFL(visual fault location) function. POE Test: automatic identification of midspan or endspan or power by 8 cores, automatic identification of standard and nonstandard device. Optical Power Meter: 850 or 1300 or 1310 or 1490 or 1550 or 1625nm wavelength switching unit switching at dBm, dB, or mw, uw, nw and REF switch. Visual Fault Location Function: detect and locate fiber breaks, as well as problems such as poor connections, fiber bends or cracks. Receiver Function: sensitivity adjustment, 300m no-load shielded network cable or non-empty shielded network cable, NCV detection, lighting function, etc. Non-contact Voltage Detecting: the receiver can be used to detect the AC voltage of household electrical wiring. Illuminate Function: the receiver designed with lamp for auxiliary lighting up the working areas during operation. Battery Operated: both the transmitter and the receiver are built-in with 1500mAh polymer battery, no need to change batteries, type-C charging, with charging indicator and low battery indicator. Other Settings: backlight brightness(level 1 or 2 or 3), backlight time(MAX or 1min or 30S or 15S), auto-off time(15min or 30min or 1h or 2h or off), red light flash under VFL function(fast flashing or slow flashing or ON). Wide Applications: suitable for the network line engineering and maintenance work of telecommunication, computer, other metal conductor, etc. Specifications: Material: ABS Cable Type: CAT5 or CAT6 Voltage: 60V Package Weight: 586g or 20.67oz Package Size: 24 x 16.5 x 5.5cm or 9.45 x 6.50 x 2.17in TRANSMITTER: Wiremap Port: RJ45 Remote Continuity: ≥300m Cable Sequence and Fault Test: Yes STP or NTP: Yes Short Circuit Reminder: Yes Anti-jamming and Normal Mode: Yes Audio Transmission Frequency: 455KHz Audio Transmission Distance: RJ45 300m NVL: 10mW Power Meter: 850 or 1300 or 1310 or 1490 or 1550 or 1625nm (wavelength) Crimping: RJ45-8 cores, min length is ≥10cm Low Voltage Prompt: <3.5V±0.1V, power indicator flashes Power Supply: 3.7V 1500mAh polymer lithium battery Size: 148 x 70 x 32mm or 5.83 x 2.76 x 1.26in RECEIVER: Scan Current: ≤300mA Remote Continuity: ≥300m NCV Detection: Yes Lamp: Yes Low Voltage Prompt: Yes Power Supply: 3.7V 1500mAh polymer lithium battery Size: 198 x 50 x 28mm or 7.80 x 1.97 x 1.10in Package List: 1 x Transmitter 1 x Receiver 1 x RJ45 Adapter Line 1 x RJ11 Adapter Line 1 x Crocodile Clip Test Line 1 x Type-C Data Cable 1 x Earphone 1 x Carry Bag 1 x Manual (English)