Directionable sounder incoporated in a white detector base and with insulator. Connected and power supplied by the loop occupying a direction in the control module. Maximum consumption: 10,5mA. Maximum sound power: 95dB +/-3dB @1m. Dispose of 32 tones and 3 volume levels (High, medium and low) selectionable through microswitches. Allows the installation of any NFX range detector. Requires B501AP, BRR o WRR base. Compatible with OPAL (159+159) and CLIP (99+99) protocole.