Details System isolation for: Clear-Com to Clear-Com, Clear-Com to RTS, RTS to RTS Eliminates grounding problems between intercom systems Matches gains between systems Passes through and translates signaling Hybrid nulling up to 40 dB Built-in setup tone Powered directly from connected intercom system Item Code TW-12C Technical Specifications Clear-Com Format Line Characteristics Max Level Before Clipping: >=3dBu Impedance: >=10KO Signaling Receive: <=4V DC Send: >=11V DC RTS Format Line Characteristics Max Level Before Clipping: >=5dBu Impedance: >=10KO General Characteristics Frequency Response: Partyline - Partyline: 200-8kHz Signaling Tone Send frequency: 20kHz ±100Hz Receive frequency: 20kHz ±500Hz Send level: >=-6dBu Receive level: <=-25dBu Distortion Partyline - Partyline: <=0.2% Max Gain Clear-Com - RTS: >=9dB Clear-Com – Clear-Com: >=4dB RTS – Clear-Com: >=-1dB RTS - RTS: >=4dB Min Gain Clear-Com - RTS: <=1dB Clear-Com – Clear-Com: <=-4dB RTS – Clear-Com: <=-9dB Power Requirements Input Voltage Range: 20-30V DC Input Current (average): <=50mA Dimensions 1.75 x 19 x 7.25in (HxWxD) (45 x 483 x 185mm) Weight 5.63lbs (2.56kg)