Probodobodyne HECS2
From Kerbal Space Program Wiki
The Probododyne HECS2 combines a remote guidance unit with a 1000 unit battery and 10 Nm torque reaction wheel. This simplifies construction by incorporating the three parts into one. However the cost of the HECS2 (7500) is greater than the cost of buying a small remote guidance system, 1000 unit battery and 15 Nm reaction wheel separately.