Technical Reference Manual for the Ademco 650, 650-6, 650-12EX, 651, 651-6, 651-12EX, published in 1983. Document No: P4925V1XX, Rev: 1/83. 6 models including 650, 650-6, 650-12EX and 3 additional variants. Advanced technical data, communication protocols, and design criteria.
Technical Reference Manual for the Ademco 650, 650-6, 650-12EX, 651, 651-6, 651-12EX, published in 1983. Document No: P4925V1XX, Rev: 1/83. 6 models including 650, 650-6, 650-12EX and 3 additional variants. Advanced technical data, communication protocols, and design criteria.
