The SRX-AU121I is an accessory for many DVR models. It provides 12 RCA audio connectors from the high-density DB25 connector on the rear of the DVR. This accessory is used when more than 4 audio inputs are required. Refer to specifications of DVR to ensure compatibility.

Key Features:

• DB25 to 12x RCA audio connectors for audio input for various DVRs, when using more than 4x inputs.