The Bluetooth version has be working flawlessly for a long while, but I'm glad they came out with the gateway to help bring the product to par with what the current market solutions are. It works great, and we have no complaints. Now that the gateway is added it lets us know when the batteries are low as well. I'm able to confirm that the door is locked while in at work. If I need a friend to swing by the house to pickup something I can share a key and give them access, no more key under the mat situations. I had installed this product over two years now and loving it.