Wall-Mounted PA Volume Controls with 24 V Emergency Priority Relay Attenuation in 10 steps, position 0 is OFF For 100 V line technique Snow-white plastic front panel and knob Flush mounting into standard 65 mm wall sockets (except ATT-3100PEU) Surface mounting with matching housing ATT-300, available at option Plug-in screw terminal Frequency range: 50-18,000 Hz Power rating: 12 W Priority facility: yes Dimensions: 80x80x67 mm Mounting depth: 45 mm Weight: 190 g Surface-mounted housing: ATT-300 Click to download attachment 1 Warranty: 3 years