Check the listing for details. DSC HSM3408 PowerSeries Pro 8 Zone Expander NEW. Condition: New. Listed at 47.86 USD. DSC HSM3408 PowerSeries Pro 8 Zone Expander NEW The HSM3408 is a zone expander that adds up to 8 fully programmable zones to any PowerSeries Pro security systemSupports no end-of-line, single end-of-line (0.5 kΩ - 28 kΩ), double end-of-line 0(.5 kΩ - 15 kΩ), or triple end-of-line loops (0.5 kΩ - 7.5 kΩ)Connect up to 3/15/30 modules per systemProvides enhanced diagnostics information for simpler diagnosticsItem 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!