ADT also offers exceptional medical alert devices. Here’s a look at why ADT makes our list for the best wireless home security system:ADT gives you lots of options. You can lease a system from them or buy monitoring for an existing system. They can monitor equipment made by many of the leading brands. They support a full spectrum of wireless security features, including video monitoring, home automation, sensors to prevent an environmental disaster, and medical alerts. ADT’s wearable panic button allows immediate access to emergency dispatchers.