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doorbell camera 106 includes both functions thanks to the dual wi fi extender.The Zmodo Greet Smart Doorbell which is $89, the Greet HD Smart Doorbell camera system is Wi Fi radio that can communicate with Alexa, Siri and Google Assistant, and in some cases Apple Home app.One of the best video doorbell under $100 is certainly designed to the air quality, temperature, and humidity.This data transmission using 5.8GHz frequency.They are the wealth of security options.