... handheld light sources offer the flexibility to test, install, and maintain single mode and multimode fiber optic networks. Key Features-Highlight output ... stabilization-Auto 10minutes shut off function-Support FC,SC,ST adapter-Big display LCD,-LED backlight switch ... (dBm)≥-7Optical Output ModeCW/270Hz, 1kHz, 2kHzOptical InterfaceFC,SC,STPower Stability (dB) (Short time)≤±0.05/15minPower Stability ...