Installation Manual for the System Sensor 2W-B, 2WT-B, 4W-B and 4WT-B (Spanish), published in 2012. Document No: I56-1800-012R, Rev: 012R. 4 models including 2W-B, 2WT-B, 4W-B and 1 additional variants. Physical installation guide, backbox dimensions, and cabling specifications.