The blue by ADT Doorbell Camera SCD2R0-29-GR in Graphite is a wireless doorbell camera that operates on batteries. It features color day mode and black and white night mode, making it ideal for monitoring your home during both daylight and nighttime hours. This model is compatible with ADT systems and can be integrated with smart home platforms like IFTTT and Amazon Alexa for added convenience. With one camera included, this doorbell camera offers a reliable and secure surveillance solution for your home.