a number of panels have great internet connectivity. The one you choose would really depend on how much the customer wants to spend and what features they need/want
Paradox is the lower end on the cost spectrum The EVO48 is a great and versatile panel, I use it for pretty much all of my
KeepSafe Systems installations and it is prominently featured on alarmparts.ca. Mainly because of its' versatility. an IP module is required to connect the panel to the internet.
Paradox also has a new panel called the Imperial. The IP connectivity is built into the unit and is ready to go. It comes with some advanced home automation features, however the integration is nowhere near that of Elk and HAI.
Paradox also has a touch screen keypad which has just been released. They also just released a Touch sense keypad which is great for dusty environments (there is, however, a couple of minor glitches I recently reported to Shmuel and George which should be fixed soon - They are pretty good that way)
Next would be a tie between HAI and the Elk M1. HAI is fairly easy to program, features and integration are quite impressive. Elk is slightly more integratable, however programming required a really high technical knowledge. The other issue with Elk is the remote access port being fixed at 80, which causes issues with many ISP's as they block port 80 on most non server accounts. This, however, can be fixed via port re-map. Like I said, a little more technically involved.
HAI also has less expensive touch screen's but the Elk Touch screens are actually Windows CE devices so you can access the web COMPLETELY via them. Of course, they are running off "Billyware" which would account for the high price point.
Internet access is built into the HAI, however Elk required an IP module.
I hope this helps
Personally, I love IP access as it makes remote programming so much easier. I have a
KeepSafe Systems customer using an Ademco Vista 128 which I really want to nuke for a Paradox Imperial simply for the ease of use and remote accessability. I am getting really tired of dialing into the panel to arm it when the customer forgets to arm one of the partitions and the retail staff cannot arm the common lobby as a result. I would be much easier to pick up my Iphone and connect via TCP/IP.
Paradox just hired a Linux guy in their design/engineering team. This should bring great options for Android phone users. Can you tell I'm stoked.
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