The same device is sold under about 10 different brand names, so buy whichever is cheaper. The same applies if you add more buttons. The calls are mostly terrible, but we found two that were less annoying. Keep in mind that the written instructions are just awful as we all come to expect from these Chinese to English through some other language translations. Also, the instructions don't always match the product - in this case, the backs of the buttons differ from the instructions for attaching the strap. Surfaces seem to be easier to make. Coverage is good on my only 1600 sq ft historic ranch. ft. By placing the base in the hallway, I cover my entire house and garage inside, as well as my entire lot outside (maximum 1/4 acre). I'm not sure if you can connect a button to multiple bases. but you probably can, since the link is controlled by the base, allowing you to create overlapping areas. All in all a good, solid, no frills, simple home pager system; but the sounds are terrible and the instructions almost useless. Therefore only 3 stars.
π Panasonic Link2Cell Bluetooth Phone System with Voice Assistant, Call Block, Answering Machine, and 5 Handsets β Expandable Home Phone - KX-TGF575S (Black/Silver Trim)
3 Review
π Anker PowerConf Bluetooth Speakerphone: Enhanced Voice Pickup & 24H Call Time for Home Office Meetings
6 Review
π Konftel EGO KO-910101081 | Personal Portable Bluetooth Conferencing Unit
7 Review
π Panasonic DECT 6.0 Cordless Phone System with Answering Machine, Call Blocking - 3 Handsets - KX-TGE433B (Black)
5 Review
JOYUSING 8MP Document Camera for Teachers - VGA/HDMI/USB Three Mode, Mac, Windows, Chrome Compatible - Ideal for Online Teaching, Distance Learning, and Web Conferencing
3 Review
π· CZUR Shine800-Pro: High-Speed Document Camera for Mac and Windows with OCR Function
10 Review
π₯ Enhance Distance Education & Web Conferencing with INSWAN INS-1 - Tiny 8MP USB Document Camera
3 Review
πΈ AVer M5 Document Camera: USB Webcam for Remote Video Conferencing - HD for PC, Mac, Chromebook, Zoom, and More - Ideal for Distance Learning, Classroom Teaching, Recording, Working & More
3 Review