We were told video capability wasn't available. We can't use Z-wave devices we already had with the system. A battery installed within our door is dead, but they want to charge a $75... We were told video capability wasn't available. We can't use Z-wave devices we already had with the system. A battery installed within our door is dead, but they want to charge a $75 service fee to send a technician and would not give information on how to replace it ourselves.