Get up to 45% off surveillance systems during this one-day sale at HomeDepot.com. Shipping is free on these items. The promotion includes this 16-Channel 1080p Indoor/Outdoor Security System, which has a 6TB hard drive. It drops from $1,779 to $999 today only. This 8-Channel Indoor/Outdoor Security System drops from $419 to $229. These are the best prices we can find anywhere. Choose from nine systems while supplies last. Sales tax is charged in most states.