1. Small size,light weight,small insertion loss(0.5db),High quality SMD components, 2. shielding design,beautiful and practical 3. It has better passband ripple coefficient and out-of-band suppression capability 4. Both ends of the gold-plated SMA connector(one end of the SMA female/external threaded hole;one end of the SMA male/internal threaded needle),double-sided circuit board design,high mechanical strength 5. Under the same conditions, 1.2G transmission distance and anti-obstruction is far 2.4G and 5.8G transmission,more suitable for long-distance and complex environmental video transmission Low Pass Filter for 1.2G Transmission Extension. It can effectively reduce the interference of 1.2G transmission caused by the signals of devices with frequencies below 1.08GHz and above 1.36GHz. Enhanced long-distance sending and receiving of transmissions. Note:Due to different production batches, the silk-screen batch numbers are different, which does not affect the use. Colour:Black Material:PCB+Metal Package Contents: 2 x 1.2G LPF Low Pass 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.