Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Hi I am from Chile needs transformer 220 and is operating with home and cell phones Chile
Document: We had no problem with installing the SIM card or getting it activated. It does send the messages to our cell phones as advertized. Both sirens are very loud !!!!!!!!! I like the little chirps that tell you when the alarm is set and disarmed. Motion detectors work very well. We keep a fob on one side of the bed and the panic button on the other for peace of mind. The system does everything as advertized and are very happy with the system.
I got the Fortress Security Store (TM) GSM-C Wireless Cellular GSM Home Security Alarm System Auto Dial System : DIY Kit because I will use both land line and cell phone sim card and because the motion detectors are pet friendly. If you go with either system be sure to go to the Fortress web site here [...], and get the user manual for the system you get. They also have a few videos that help. It's much better than the one that comes with it.
I purchased this unit to replace a different recently purchased unit that did not meet my needs &#34;sensor range&#34;, for providing adequate monitoring. This unit has performed very well and was easy to setup and configure. The only two things I have encountered was during installation, the two sided tape is not a 3m like product, so I purchased some at a local home improvement store, and this was a preference to use screws to install the magnet sensors to the doors.
It can send and receive text messages, and make phone calls and can be armed/ disarmed with a text message, but that is simply not enough in today's world. We live in the era of Nest thermostats and smart phones. I would like the system to have wifi connectivity and be able to communicate to my smart phone over the internet.
Just take your time and follow the manual you get from the web site. You will need a sim card for the cell service. Go with T-Mobile or ATT and find a standard size card or you can use an adapter like I did that makes it so you can use the newer Micro card.
My house was broken into yesterday, the thieves just simply kicked in the front door, luckily they didn't get away with much, because this system started going off & immediately notified my cell phone & my wifes cell phone. I believe because the system alarm started going off it scared the cowards off. The external siren is plenty loud enough, the internal is pretty loud too. This is a no frill system and as other reviewers have noted, this is all you need.
Excellent product at great price. Has customer and technical support onlne. Very easy to install. The setting process is very intuitive. The back of the panel has two slots to install a couple of wires as antennas in order to increase the reception of cell and sensors signals. I have had this security system for a month and it has been working perfectly. The setting of the wireless siren can be tricky sometimes, there is a video in the online store to help to set this siren.
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.
This is an excellent product.I did the installation in my home of the system. The installation was very easy and work it without issue.
Love this security system. It was easy to install. My only advice is to download the manual from the Fortress website. The key fobs and panic button is a plus. The system works, when my husband came home the system went off and started calling the numbers that we put in. I also like the ability to add on to the system.
Answer: You can use the system with 220v without transformer like I do in Vietnam