This 7/8dB cavity coupler is for 698~2700MHz, N Female. This coupler is recommended to be used for installing GSM, 4G LTE, 3G mobile phone signal repeaters with a series of antennas. This element will help to avoid any power losses that can negatively influence the quality of the signal while it is being transmitted from one antenna to another. The coupling value is 7/8 dB. The Ingress Protection Code is IP55. The accessory is waterproof and is compatible with all the boosters that we offer.