EA015 40 Watt or 80 Watt Wall mounted Active Classroom Speaker amplifier and speaker system, ideal amplifier for classroom and meeting rooms, easily fits either side of touchscreen or interactive whiteboard with RS232, Bluetooth, Sd card reader, Volume, Bass and Treble controls. The amplifier can be remote controlled using an optional infrared remote control, RS232 serial port or an optional wall control panel with or without local input. The auto power function switches off the power amplifier when no audio signal is present for a certain time. This time window can be adjusted using RS232 commands. Includes adjustable maximum level, multiple inputs: unbalanced on minijack and balanced on euroblock + additional input via optional wall control unit. All inputs can be gain adjusted, used individually or mixed together The Automatic power on function will power up the speaker when a signal is present at one of the inputs. The input threshold can be adjusted via RS232 control. The volume setting is manual or RS232 controlled and restarts at previous setting Nominal 2x 20 watt or 2x 40 Wwatt amplifier with Sound Pressure Level of 92 dBA at 1m and 77 dBA at 6 metres (back of classroom) twice the loudness of some lookalike models or 80 Watt 105 dBA at 1 m for extra large class rooms Classroom speaker designed for pupils to create correct sound levels and frequency range for the speech of the teacher to aid learning ability. Safety features are enhanced to prevent damage to the equipment and pupils using steel grille and secure wall brackets The product has optional Bluetooth input and SD card reader so that the teacher does not have to change the cables when using different equipment. Inputs cater for different device output levels for PC and outputs for other devices. The volume control is front mounted together with a power on/off switch that complies with latest CE directives