Installation Manual for the System Sensor ZCK-1, ZCK-1E, ZCK-1EG and ZCK-50, published in 2010. Document No: I56-1610-011R, Rev: 011R. 4 models including ZCK-1, ZCK-1E, ZCK-1EG and 1 additional variants. Physical installation guide, backbox dimensions, and cabling specifications.