Please note that Module 3, 8, 12, 15, 18, 19, 25, and 30 use a different interface board as ACDP 1st generation. If you are using ACDP 2nd generation, you will need to purchase the above modules separately, as they are not compatible with ACDP 2nd generation hardware. Additionally, ACDP2 utilizes different PC software. Please do not use PC software designed for ACDP 1st Generation with ACDP 2nd Generation.