Jonard Tools OFI-50 Optical Fiber Identifier with 2 mm, 3 mm, 900 nm & 250 nm Adapters

Make sure this fits by entering your model number. QUICK IDENTIFICATION: Quickly identifies the direction of transmitted fiber and display the relative core power without damaging the fiber or disrupting the network AUDIBLE WARNING: Efficiently identifies the traffic direction and frequency tone (270Hz, 1KHz, 2KHz)