Based on this product's specifications, here are some alternatives and similar models
EFB Elektronik 533680.9 Fiber Optic Attenuator, SC Connector, 45 dB Return Loss
Summary description:
The EFB Elektronik 533680.9 is a high-quality fiber optic attenuator designed for precise signal level management in telecommunications networks. Featuring an SC connector, it provides a return loss of 45 dB. Engineered for reliability, this component operates efficiently within a temperature range of -20 to 75 °C, making it suitable for various professional networking environments requiring stable signal attenuation.