Bests & Worsts Reviews from Amazon

It was easy to set up (you do need to reed the included instryctions, but they are easy)! Set up took me about an hour. I did spent 15 min reading the included manual. Then it took me another 30 min for the installation of the main unit and all the sensors. I used my drill and just drilled all the motion sensors to the upper corners of the walls where I needed them (screws are included). Then I attached all the door sensors the all the doors using the included 2-sided stickers, and I added pieces of tape just in case the sticker glue doesn't last very long. Then I spend another 15 min for playing with the settings of the main unit - I made the settings to my liking, including adding phone numbers for both making a phone call and sending a text in case the alarm is triggered. I am using an AT&T SIM card. I tested it and it works great. Every time the alarm is triggered the main unit will call the number (my cell phone) and also send me a text. For thos of you wondering what kind of SIM card it is using - regular, micro or nano - it uses the regular SIM. That info I couldn't find anywhere online, and only found after I received the unit and opened it. Also - all sensors included in this package are pre-registered to the unit. You don't have to do anything but turn them on and they are already working with the main unit. The motion sensors have an ON/OFF button. The door sensors don't have an ON/OFF button. You don't have to install all included sensors, only install as many as you need. If you have some left over (not needed) just don't put the batteries in them and/or leave them in OFF position. By the way - each sensor comes with its own battery included. If you need extra sensors just buy them separately. Extra sensors do need to be added and registered through the main unit - I added 3 more Motion sensors which I bought separately. Each one came with an instruction how to add it (it's very easy). The unit and sensors are pre-programmed for you so that all door sensors are Zone 1 and all Motion sensors are Zone 2. The unit and remote give you the option to fully ARM it - which arms all Zones, or you can do the so called second option for arming called "Home arm" which will only arm Zone 1 - only the door sensors - you can do that when at home or when you go to sleep. You can reprogram all sensors and zones if you want to, but I don't see a point, they are already programmed in the best way possible, in my opinion. One recommendation - set up the arming time to more time - about 30-40 seconds should be OK for most people; and set up the disarming time to less time - about 0-10 seconds. Most people will use the included remote control which works like a car remote - you will just click on arm/disarm. The remote will work from outside the house - unless you have a huge house I guess and the alarm unit is far away from the door/garage. If your alarm unit is relatively close the your main door/gate or garage door - it should work with no problem with your remote. So if it works fine - just set up the "DISARM TIME" to less time - zero to ten seconds - so in case of an intruder - he/she won't have enough time to somehow disarm it - which may be possible if they remove the power cord and the battery. And YES - this alarm unit comes with an included and installed back up power battery which should last at least 1 day - I couldn't find info on that, but it comes with it, which makes the unit power protected. You can also connect the unit to a regular phone line, if you have one - a house phone that has regular phone connections. The unit comes with phone IN and phone OUT inputs. You can also connect it to hardwired sensors - I am not sure how that works but the connections/attachment bolts are on the back of this unit. Also in the Manual it offers options for Security companies to add the unit to their system, so it is possible to have this unit with a security company - so long as they agree to use it - I guess in that case you'll just add their phone number, and when the unit triggers an alarm - it will call them, and then they will call you and they can send a security person to your house. You can program program the unit to call up to 5 phone numbers and text up to 3. So it is possible to program it to call a Security company and yourself at the same time as well. Keep in mind that id you do want to use it with the security company there will be monthly fees with them for the service. Otherwise there are no monthly fees to just use this unit with your own phone number, if you don't count the SIM card charges (get a pre paid SIM card). I added a pre-paid AT&T SIM card which at the moment costs 10 cents a phone call and I believe 20 cents a text message. You can add $10 or $20 to it, and then recharge the SIM card when needed. It's not a monthly fee SIM, so you won't have a monthly expense for this alarm unit. With only $10 in the SIM and if the alarm is NOT triggered you may last 6 months and more with that SIM card without recharging it. Unless you add the feature to send you a text message each time the alarm is armed and disarmed - this is an optional setting. You can also turn on/off a feature to remotely turn on and off the alarm via a text message. So if these features are on and used often, then you will need to recharge your SIM card more often, as it will cost you for each text. So keep these things in mind. And last - I will mention about the sirens. This package comes with 2 sirens. One is smaller and has to be next to the alarm unit because it plugs in it and doesn't need separate power cord and the other is bigger - that is a remote alarm, of course it is pre-programmed to work with the main unit - if you bought this package - and it uses a power cord with adapter. So you just plug it in somewhere else. Preferably the main unit and small siren should be installed in one side of the house and the bigger remote siren should be installed in the other side of the house. Some people install the remote siren in the garage, in an outside building - like a second house, or a shed or in the backyard or front yard if you have a power outlet there. Just make it hard for an intruder to find both sirens fast - they should be far apart in my opinion. And YES - both are loud and can be clearly heard by the neighbors even if both are installed inside your house. So this is my review of the Fortress Security GSM-B Wireless package. I haven't needed to call their customer service yet, as everything I needed to do was clearly explained the the manual and I had no problem installing all the parts. This is in my opinion the best and easiest DIY (do it yourself) alarm system which offers many features and optional componetns (you can add glass breaking and smoke alarm sensors to it) and a system that is loud enough and secure enough (uses the most secure cellular networking to send you a text or phone call) and is protected with a back up battery in case of power outage. So I recommend it to anyone! Buy this system. I did so a month ago (bought it from Amazon) and I can say this has been one of the best investments I have made in the recent past!