2VOICE, two wires throughout the system for quick and easy installation. Maximum flexibility: from single-family homes to larger building complexes.Product features:CCTV bus interfacefor max. 4 analog cameras for DIN rail mounting Short-circuit proofTechnical data:Compatible with System 2VOICESupply voltage via bus:36 - 48 V (DC) Dimensions: 108 x 90 x 61 mm (6 sub-units) Installation instructions:Note: