Detailed Product Description Visual Fault Locator, Visual laser source,laser source-detect distance up to 7 KM-CW and modulated signal-rechargeable batteryItem / Model No.FHV1AWavelength650 + 10nmEmitter TypeLDConnector TypeFC/PC (interchangeable SC,ST)Modulated Frequency2 HzOutput Power0, 3, 8 dBm (adjustable)Power SupplyAC/DC adaptor &. Li-ion BatteryBattery Life20 hrs. (continuous ...