Wireless Video Doorbell

SimpliSafe -- PLS catch up to Ring!  I have 2 SimpliSafe whole-house systems, but one house does not have power at the front door ... so I have a lonely Ring  BATTERY video cam there, and the battery lasts for 5-6 months, sometimes more, without a problem.  But I also now have to SUBSCRIBE to a RING plan, along with 2 SimpliSafe plans, for that one application.  Wasted resources but necessary.  PLEASE develop and release a wireless doorbell video cam!