BT 80B RF3 (REIN filter) junction box, 3 Way IDC connectors to 3 way screw, internal use only. Surpresses RF interference on the line & suitable for ADSL & vDSL installations.
The inductor in this junction box is the same as the one fitted to the BT I Plate/BT Broadband Accelerator . Fit to eliminate small Repetitive Electrical Impulse Noise (REIN) which can affect broad band ADSL/vDSL lines. Dimensions (L) 56mm x (W) 41mm x (H) 22mm.
Note, the Mk3 vDSL SSFP & Mk4 SSFP feature a filter that is similar to the BT80B RF3, however it is NOT identical. The existing stand-alone RF3 may still be required to assist in solving REIN faults and can be fitted even when the Mk3 vDSL SSFP is in situ.