If you've ever wanted to boost the audio on your security system and give it the capability to be able to listen in remotely 2-ways, then the M1TWA is what you'll need for your M1 series control. You can easily add 12 microphones through the 3 on-board inputs. You can also mute any of the three amplified zones if needed.
Specifications:• Output Impedance Range: ~4 to 32 Ohms per SPKR Output Multiple speakers on any single output must be parallel or serial connected to maintain rated impedance
• Amplifier Rating: 1/2 Watt per Speaker Output
• Microphone Inputs: Up to 4 Mics per input. Compatible with: ELK-M1TWM, ELK-M1TWS
• Operating Voltage: 9 to 14 Volts D.C.
• Current Draw: 15mA nominal, 1000mA (1 Amp) maximum
• Microphone Current Draw. 5mA each
• Housing Dimensions: 4.25" x 6.375" x 2.125"
• Circuit Board Dimensions: 2.25" x 3.95"