I originally purchased the SC-1000 and the SC-10 a few months back. I ordered the SC-10 in addition to the SC-1000 because it allowed me to acquire the additional audio alarm and two additional door/window sensors for a lower price than it would have been if I had ordered the components separately. Since then, I have also acquired many more skylink components that I have integrated into my overall Skylink system. Overall, I really like the system. Tallying up my whole system, I have the control panel, the emergency dialer, 2 keypad controls, 3 remote keychains, 8 door/window sensors, 6 motion sensors, 3 audio alarms, 2 vibration sensors, 4 alarm sensors, and 1 silent alarm. This is more than enough for the 2500ft/sq home that I'm renting (which is why I went with a wireless system)Overall, just like any other DIY security system...the Skylink system is not perfect. It is not bullet-proof. It can be defeated. However...it DOES provide deterrence, notification, and a certain peace-of-mind. That's what systems like these are for. If you are a typical consumer who is looking to deter/defeat the average burglar, this system can do a good job of it. However, if you possess highly valuable art/electronics/commodities...this may not quite cut it. If you, for whatever reason, could be SPECIFICALLY targeted by a more sophisticated type of criminal, you're probably looking in the completely wrong price-point. You won't find what you need for this kind of money, unfortunately. You'll probably be better off going with the pros in that situation.Overall assessmentSTRENGTHS:-Easily expandable-Easily installed/modified-Solid range on the componentsWEAKNESSES:-Wireless signal could be jammed-Skylink support is quite poor-Some bulky/unsightly componentsRE: the weaknesses...The reason I put the potential jamming at the top of the list is the ease by which it could be done. In fact, I did it accidently. I purchased some I recently had my front door kicked in while the wife and I were away at work. Fortunately we were not cleaned out and the only thing missing was my wife's jewelery box. After replacement of the door I thought it best to purchase an alarm system. While doing some research and understanding that you either pay for monitoring at the tune of [...] dollars a month and get the system install with a 2 year contract for monitoring services ([...] for 2 yrs), which by the way consists of a phone call out by the alarm system that is answered by your monitor service, then they call your house and any other #'s to find out weather or not it may be a false alarm, if not a false alarm, they send a person to your residence to verify the alarm (by now maybe 1/2 hr or more has passed), then they call the police, fire, rescue, or what ever may be needed (in my case it was 15 minutes to get the police to my house, and that was only because it was a high priority call because I have guns in the house, it would have been much longer for police to answer a call for a simple break in call). By now your house could be burnt down, cleaned out by the thieves, etc. So left with this information, and knowing that a 45 minute response time in the best circumstance w/the addition of having to pay [...] a month I soon realized that I would not be going down that road. I should also mention that I haven't had a hard wired phone since I bought it in 2001. I don't have kids and my wife and I have always had cell phones so I saw no reason to pay [...] a month to a system that wont even let me call to the next zip code w/o charging me long distance. I do however have a home phone, I think I pay [...] a month for it. It uses a internet connection with a router and so the phone works even if the computers are shut off, and has no long distance charges for the most part. That being said, my research led me to Skylink. I ordered the SC-1000 and the SC-10 systems. The system is modular so buy what you need, and upgrade as you wish. The SC-1000 has 1 control panel with siren, 1 emergency dialer, 1 motion sensor, 2 door sensors, and 1 remote control. As I needed at least 3 door sensors and 2 remotes, I also purchased the SC-10 which gives you 1 remote siren, 2 remotes, and 2 door sensors. I ordered from Amazon at about 5:00pm Friday and received the order Sat. at about 10:00am ([...] shipping in my case, but wow, at my door in 17hrs).So now on with the install and set-up. The system has all wireless sensors. The control panel, dialer, and additional siren (SC-10) all have plug in power supplies so they need to be close enough to an outlet (they have battery back-up but I don't think they would make it more than a day and maybe less). I my case I found it easiest to set up everything on a table, with nothing mounted, and get the sensors, sirens, dialer, motion sensor, and remotes programmed to the control panel. It is a little taxing but It was done in about an hour (I did have to refer to the web and Skylik's website to get it done as the manuals only describe a single system install, IE: dialer, control panel, additional siren to work by themselves and not to be one system all working off the control panel). Once done and tested on the table it was time to install. This was simple. Find locations to mount various sensors, panels, sirens, and dialer in appropriate locations and install them. In total, I spent approximately 5 hrs on set-up and install, this included testing the system in "chime mode" and verifying full functionality.To address some of the reviews I have read, This is my response:The Skyline products provide security for a fraction of the cost of the traditional security systems.It is designed for the do it yourself crowd. You plan it, set it up, install it, and monitor it.It is expandable to fit most peoples needs and circumstances.I got a 15% break on my home owners insurance and it only cost me an afternoon and [...]I can respond to my alarm in 10 minutes (work 10 min away from my house), the others charge you to respond and take much longer.All security systems have a flaw, and none of them will prevent a break in. At best will call someone who in turn can call the police/fire dept. once on site.If you have an existing security system you can purchase just the dialer and alarm sensor to monitor it yourself (and save some money on your home owners insurance).The system will not notify you of open doors and windows when you arm it because of the wireless sensors (cannot run open/closed signal by battery 24/7) or the batteries would die in a matter of days. You have to verify all windows/doors are closed and locked if you want them to be closed or locked, as the alarm system will set regardless and only recognizes a change of any sensor (I think you could close a door that was open when the system was armed and set the alarm off).The system will not tell you what sensor set the alarm off and I wouldn't expect that it would for a system that costs a fraction of the norm.To sum it up I would like to say "A much needed product that offers many applications at a reasonable price."The thought of buying and installing an alarm system was daunting and to my surprise it ended up being way easier than I thought. This alarm system provides everything you need for a simple install, right down to the batteries and screws. Instructions were concise and it was easy to program. I love the FOB it came with, makes arming and disarming the alarm a breeze. The whole system is wireless and adding extra sensors are easy. I am very happy with my system and happy I bought it. I figure I saved about $500 over a system installed by a professional alarm company and I don't have to pay monitoring each month either which saves me about $600 for a year!Get it if you don't want to pay monthly fees. Just need a phone line and good to go. even works in condos.