The 2010-2 from KR Electronics (A Division of NIC) is a Band Pass Filter with Frequency 5.2 to 5.8 kHz, Bandwidth 600 Hz, Center Frequency 5.5 kHz, Insertion Loss 1.5 dB, Rejection 50 dB. Tags: PCB Mount, Surface Mount, Lumped Component Filter. More details for 2010-2 can be seen below.