Identified Wavelength Range 800-1700 nm Identified Signal Type CW, 270Hz±5%1kHz±5%2kHz±5% Detector Type 1mm InGaAs 2pcs Adapter Type 0.25 , 0.9, 2.0, 3.0 Signal Direction Left & Right LED Singe Direction Test Range(dBm, CW/0.9mm bare fiber) -46~10(1310nm) -50~10(1550nm) Signal Power Test Range(dBm, CW/0.9mm bare fiber) -50~+10 Signal Frequency Display (Hz) 270, 1k, 2k Frequency Test Range(dBm, Average Value) 0.9, 2.0, 3.0 -30~0 (270Hz,1KHz) -25~0 (2KHz) 0.25 -25~0 (1KHz,2KHz) -20~0 (2KHz) Insertion Loss(dB, Typical Value) 0.8 (1310nm) 2.5 (1550nm) Alkaline Battery(V) 2pcs AAA batteries Operating Temperature() -10�+60 Storage Temperature() -25�+70 Dimension (mm) 196X30.5X27 Weight (g) 195