Crystal RF bandpass filter, heat dissipation area, stable operation and long running time. The filter has a 1dB bandwidth of 4MHz and a steep cutoff. Small size, light weight, low insertion loss, and a center frequency of 868MHz. It has good pass-band ripple coefficient and out-of-band rejection. Performance optimization for 868MHz RFID receivers and European standard LoRa IoT node devices, which can effectively filter out out-of-band signals, reduce noise and increase dynamic range Impedance: 50 ohms Center frequency: 868MHz Passband (1DB bandwidth): 867~869MHz Maximum Carrying Power: 100 mW (20 dBm) Interface: SMA-M, SMA-F Colour:As shown Material:PC+Metal Package Contents: 1 x Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.