The 2827-130 from KR Electronics (A Division of NIC) is a Low Pass RF Filter with Frequency DC to 0.13 MHz, Stopband Frequency 149 KHz, 3 dB Cutoff Frequency 0.13 MHz, Lower Rejection 30 dB@149 KHz, Upper Rejection 1.5 dB@149 KHz. Tags: Module with Connector. More details for 2827-130 can be seen below.