Radio Design Labs DS-TPSL1A Active Single-Pair Sender - Twisted Pair Format-A - Mini-Jack & Stereo RCA In, Silver Features: Stereo Audio Input Combined to Mono Output Input on Dual RCA Jacks or Mini-Jack Switch Selects which RJ45 Pair (A, B or C) is Fed Signal and Power Pair Pass-Through between TP CABLE RJ45 Jacks Remote Powering through Twisted Pair Cable Fused Local Power Feeds all Connected Modules Local Power Input on Terminal Block Blue LED Indicates Module is Powered Daisy-Chain with Single-Pair or Two-Pair Format-A Senders Studio-Quality Precision Active Balanced Circuitry Specifications: Input: 10 kΩ unbalanced (left and right) Input Connection: Mini-jack or dual RCA phono jacks Input Level: -10 dBV Format-A Signal Pair Used: Switch-selectable A, B, or C Format-A Input: RJ45 Output: RDL TP Format-A Output Connection: RJ45 Frequency Response: 20 Hz to 20 kHz (+/- 0.25 dB) THD+N: < 0.05% (20 Hz to 20 kHz) Noise: < -90 dB Headroom: > 18 dB Indicator: Power In Power Connections (2): Detachable terminal block; RJ45 Power Requirement: 24 Vdc @ 25 mA plus connected loads Dimensions: 1.6" (4.06 cm) W; 4.11" (10.45 cm) H; 1.89" (4.8 cm) D Mounting Box Minimum Depth: 2.4" (6.1 cm) Ambient Operating Environment: 0 C to 55 C