The Anritsu MW9076B is a high performance OTDR module ideal for users requiring long-distance optical fiber installation and maintenance. Wavelength:1.31/1.55, Dynamic Range: 45/43 dB (typical), Dead Zone: 1.6/8 m. Supplied with: MW9076 series operation manual, Serial interface mMW9076B-MU25000A-MW9076B4-MU960003A anual, Connector adapter, Lithium ion battery pack. Requires Display Unit (MU250000A OR MU250000A4)