The EPM-50 Power Meter (FiberBasix 50 series) provides highly accurate optical power measurements and reference value setting capabilities for link-loss characterization and optical power testing. The EPM-53X variant uses a high-power InGaAsX detector, supports five calibrated wavelengths (850/1300/1310/1490/1550 nm), offers a power range of 26 to -50 dBm, and typical battery autonomy >300 hours. Optional PMA adapters (PMA-22, PMA-32, PMA-54) and rubber boot (RB) are available to configure connector types.