A range of high quality attenuators supplied complete with plastic surface mount back box. The stylish ABS faceplate is fitted with a matching plastic knob. Each attenuator is fitted with a 24V relay to enable bypass to full volume when triggered from a fire alarm panel.,
,"Attenuation:3dB
Frequency response:35Hz - 20kHz
Relay:24V, 50mA
Dimensions (H x W x D):84 x 84 x 75mm"