The SRY-TX-L1-923 from ETL Systems is a RF Over Fiber Module with Frequency Range 850 to 2450 MHz, Optical Wavelengths 1310 ± 10 nm, Optical Output Power 3.8 ±2.5 dBm, Noise Figure 12 to 15 V, IP3 14 to 17 dBm. Tags: Module, Transmitter. More details for SRY-TX-L1-923 can be seen below.