Bumped the Internet at a single GSM-signaling traffic is housed in the sensor housing. It implemented some interesting solutions that are worth mentioning.
Yesterday I went to the radio market in Mitino for dimmers for LED lamps (I want to study them and write a review). I bought only one - Legrand Etika 672,219 and Schneider Blanca BLNSS040011 unfortunately not found, but today it has ordered in the online store.
At the same time look what GSM-alarm signaling sell and everything was sad - everywhere should insanely expensive wireless system Ajax (13,000 minimum set of two sensors no sirens) and Chinese wireless signal with a frequency of 433 Mhz, which easily jammed by any radio transmitter, and the code of the remote and without problems read kodgrabberami.
Surprisingly, I have not met on the market of any Russian GSM-alarm signaling, but their produce is more than ten companies in Russia. In the evening after visiting the market began to study GSM-alarm signaling on the internet and came across an interesting piece.
GSM-alarm signaling Contact GSM-2Which produces the St. Petersburg company Rhythm, looks like an ordinary motion PIR-sensor, but unlike Novosibirsk Express GSM (ammo1.livejournal.com/484481.html)It supported external power, external loopback one additional sensors, external siren, setting-removal key-tablets TM, and even remote control setting from the computer.
One of the main problems of alarms - a way of arming and disarming it. On the one hand it would be desirable that it was convenient to the other safely. In many alarms, standard cheap Chinese trinkets 433 MHz code that can intercept any petty crook, who bought the simplest kodgrabber. In other systems, for disarming need to enter a code on the panel - long and uncomfortable. Perhaps the easiest, fastest and safest way to disarm - a key-tablet TM (as intercoms), but it is desirable to be able to arm without a key.
We Contact GSM-2 has a switchable mode in which to arm sufficiently close contacts Reader TM to any metal object (such as a conventional key), and is removed from the system of protection has only TM key.
The second way - to buy a separate wireless remote with its own encrypted command system. The third way - external management of security systems or other automation systems.
On a small board alarm has 9-pin for power supply, inputs and outputs, three jumpers for quick setup and MicroUSB-connector that lets you connect computers to the signaling for the fine settings.
This approach allowed us to do a lot of fine tuning.
When the alarm can send SMS and make calls to numbers 1-8. In addition there disables sending SMS about events (arming / disarming, low battery, switch to an external power supply, auto-tests). There are also event log, with time, you can synchronize over the Internet, if the tariff simkarty supports it. Maintained even change SMS text messages.
Alarm costs about 4,500 rubles and, in my opinion, it's expensive, because for the price of about 5,000 can buy a "heaped" GSM-alarm system with a large number of inputs and outputs.
P.S. Slowly continue searching for the ideal GSM-alarm signaling for the cottages. I'm sure it exists. :)
© 2019 Alex Nadozhin