GSM Alarm System GL09 4G/3G/GSM 8CH Alarm Security System Alert Module 8‑Channel Input Low Consumption for Home Warehouse Security(US)

I hooked this up with a 12DC supply. Programming is not too hard. The China made YT Videos were somewhat helpful. They are not super descriptive but helpful.The APP is a 1 at a time Programming, not batch type design. Makes it slower to do but 1 at a time & test let's you know your doing it right.

I purchased this unit to convert my home alarm system from a landline to the cell network. The install went perfectly and the device worked well. I used the device successfully for two months. Then this device just stopped working. I emailed the company identified in the instructions asking for help but they never responded back.

I’m using this to monitor my alarm and fire system while I’m away from home.

this is the second i ordered in 9 months because the 1st only lasted 9 months there is not warranty of this product, there is not similar product for sale in market, so this is my last purchase, if this goes bad in a few months, i have to get a phone line in the house and buy a sensaphone or similar.

It's not extremely advanced in technology, but appears to be functioning fine, once you are familiar with its setup. I have it sending text messages on a security system......but you can use it for anything you wanted to monitor off the 8 contact points

I am using it for an alarm system… I have wanted to try something like this for a long time… Make sure you print the information out and study it carefully. It is really a cool device and with some imagination you can do some really interesting things with it. Try not to let it intimidate you. I may add some more information at a later date if possible.I saw a review that said it wouldn’t work with iPhone… It works fine with iPhone just download the app.

After purchase I realized it dose not work with Iphone because it is Android only software.

I use this as a secondary back up for a security system and it works great.