ciciglow Visual Door Viewer, Digital Peephole Security Camera with 2.8 inch LCD Display Infrared Night Vision Doorbell Function Photo Taking Function(Silver) - Amazon.com
RELIABILT 1.03-in Diameter 200-degree View Door Viewer in the Door Viewers department at Lowes.com
Door Peephole Camera, Door Viewer Peephole, 145° Wide-Angle Digital 2.4in LCD for Home Apartment Entry Door Front Door - Amazon.com