AXIS C1310-E is an all-in-one unit that includes Power Amplifier and Signal Processing (DSP). Preconfigured digital signal processing generates a clear and understandable voice at all times. The built-in memory supports pre-recorded voice messages. Or, security personnel can respond to notifications or provide live instructions. AXIS C1310-E also features a built-in microphone for remote system status testing, so you always know it's working.