• Upgraded Function: with red light pen function to detect optical fiber on and off
• Line Hunting Function: it can be used for RJ11. RJ45 interface cable hunting, and other metal wires can be hunted through an adapter
• Find Cable Breakpoints: no need to strip the line insulation skin, simple, fast, convenient, and can quickly identify the location of the line breakpoint
• Find the Short-circuit Point of the Cable: it can accurately find the short-circuit position of two cables
• Check the Alignment: measure whether the wiring sequence of the crystal plug of the network cable is correct
• Battery Indicator: when the battery is under-voltage , the power-on button flashes to indicate insufficiently
• Receiver NCV: can be used for non-contact AC voltage detection above 48V
• Receiver Lighting: can be easily used in a darker environment
• Receiver Signal Attenuation Knob: it can be used for tracking, breakpoint, short-circuit point, signal strength adjustment and precise positioning
• Receiver Earphone Jack: plug in headphones in a noisy environment to avoid external noise from interfering with the measurement
• Wide Application: a necessary testing tool for telecommunication engineering, internet bar, network maintenance, professional wiring, electricians, etc.

Specifications:

• Material: ABS
• Red Light Pen Function: 5mW power, <5km distance, 650nm wavelength
• Transmitting Signal Distance: >300m
• Safety Level: IEC61010-1 600V CAT III, pollution class II
• Working Temperature: 0 - 40 Celsius Degree, maximum relative humidity of 80%
• Storage Temperature: -10 - 50 Celsius Degree, maximum relative humidity of 80% (remove batteries)
• Power Supply(NOT Included): Emitter: 1 * 9V 6F22 battery, Receiver: 1 * 9V 6F22 battery
• Emitter Size: 140 * 60 * 25mm / 5.51 * 2.36 * 0.98in
• Receiver Size: 190 * 40 * 23mm / 7.48 * 1.57 * 0.91in
• Emitter Weight: 82g / 2.89oz  
• Receiver Weight: 81g / 2.86oz