UNI-T Fiber Optic Engineering Pen UT691B-30C UT691B-30T 30mW Visual Fault Locator VFL Optical Power Meter 2.5mm Interfac

Specifications Model UT691B 30C UT691B 30TPower Measurement Range UT691B 30C 50 to 30dBmUT691B 30T 70 to 10dBmWavelength Range 700nm 1700nmCalibration Wavelengths 850nm 980nm 1270nm 1300nm 1310nm 1490nm 1550nm 1577nm 1625nm 1650nmTester Type InGaAsOptical Power Port 2 5mm universal interfaceRed Light Wavelength 650nm ± 20nmRed Light Output Power 30mWAccuracy UT691B 30C ±0 4dB 1310nm 1490nm 1550nm 1625nm ±1dB Other wavelengths UT691B 30T ±0 2dB 1550nm 1625nm ±0 3dB 1310nm 1490nm ±1dB Other wavelengths Resolution 0 01dBmLED Backlight Display SupportedBattery 1800mAh rechargeable lithium batteryCharging Port Type COperating Temperature 0℃ to 50℃ in use 45℃ to 0℃ when chargingStorage Temperature 20℃ to 45℃Dimensions 170mm x 25mm x 25mmWeight Approx 125gFeatures 1 Broad Measurement RangeSupports two models with different power measurement ranges UT691B 30C 50 to 30dBm and UT691B 30T 70 to 10dBm suitable for various optical power scenarios and requirements 2 Multiple Wavelength CalibrationPrecisely calibrated for 10 common wavelengths including 850nm 980nm 1310nm and 1550nm ensuring compatibility with both single mode and multi mode fiber applications 3 Versatile Red Light ModesFeatures continuous and pulsed modes for red light output enhancing long distance fault visualization while conserving battery life 4 User Friendly DesignEquipped with a 2 5mm universal interface LED backlight display and recharge