OPTO•DX Specifications

 Supported Formats: S/PDIF (Consumer) - format & signal level
AES/EBU (Professional) - format & signal level
Chord Electronics DX (single or dual coax) - format & signal level
Dimensions (L x W x H): 3.15" x 4.05" x 1.20" (80mm x 103mm x 30mm) each transmitter & receiver
Shipping Weight: ~1.9 lbs (0.85 kg) 
Power: DC 12V @ 200mA.  5.5mm x 2.1mm connector
Warranty: 60 day product return (less shipping costs)