These have a longer battery life than most video doorbells.
Brad's Deals Editor Michael,
The Eques Greeter Digital Door Viewer & Doorbell drops from $49.99 to $29.99 with free shipping at EquesHome via Newegg. This is the lowest price we found for this set by $20. This video doorbell works like a peephole and is wired to a 2.8" LCD viewing screen, so you can view and record video from the doorbell without using a smartphone. The camera also has night-vision and a two-month battery life. Sales tax is charged in most states.