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/endspan/power by 8 cores, automatic identification of standard and nonstandard device. Optical Power Meter: 850/1300/1310/1490/1550/1625nm 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/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 1/2/3), backlight time(MAX/1min/30S/15S), auto-off time(15min/30min/1h/2h/off), red light flash under VFL function(fast flashing/slow flashing/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/CAT6 Voltage: 60V Package Weight: 586g / 20.67oz Package Size: 24 x 16.5 x 5.5cm / 9.45 x 6.50 x 2.17in TRANSMITTER: Wiremap Port: RJ45 Remote Continuity: ≥300m Cable Sequence and Fault Test: Yes STP/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: 850/1300/1310/1490/1550/1625nm (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 / 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 / 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)