Power Supply with Corbus Repeater Module, Power Series Pro The HSM3204CXNA from DSC is s Corbus Repeater and insulator module with four high current relay outputs compatible with the Power Series Pro panels. The module contains an onboard power supply to repower the Corbus. Features: Provides an additional 12VDC, 2 amps of current along with 4 programmable Form C relay outputs Each module extends the bus up to 4000 feet. Four modules may be connected together in series for a total of 14,000 feet Connect up to 1-8 modules per system Provides enhanced diagnostics information for simpler diagnostics Item comes exactly as pictured. If it is not in the picture, it does not come with the item unless stated in the description. You may not receive the exact unit pictured, but one in similar condition. Check compatibility with your system. We are not responsible for incompatibility or improper installation. Your feedback is extremely important to us! If you are satisfied with our service please take the time to give us positive feedback. We tremendously appreciate it! We strive for your complete satisfaction. Likewise, if you have any issues, please contact us first, and we promise we will do our best to satisfy your needs and solve the problem. If we resolve your problem, we kindly ask you to still leave us positive feedback. Your kindness will be extremely appreciated!