When released, Honeywell said that the L5200 would be the last panel they ever released with a POTs connection, although its replacement appears to have included the connection. The main difference between the L5200 and the new L5210, as you can see in the image below, is the smaller screen and the shape/type of the buttons. Honeywell has developed the L5210 to look more like its large-screen counterparty, the L7000. The panel is a sleek looking product, and while the smaller screen may make the unit a bit less attractive than the L5200, it's worth noting that the price of the new panels is between 5 and 10% cheaper.
As of today, Alarm Grid is discontinuing the sale of the l5200 and selling only the L7000 and L5210s. We have also switched out the old L5200 kits, and are now selling the L5210 in kits that are the same as the L5200 kits (Our most popular L5210 kits are the L5210PK-WIFI, L5210PK10-WIFI, and the L5210PK10-WIFI-3G).
For those who have the old, L5200 model, worry not. The systems are effectively the same and all the products that work on the L5200 work on the L5210 and vice versa. If you need help with your L5200 or L5210 system, need communicators, or just have general use questions, please let us know or email us at firstname.lastname@example.org.