Blink Video Doorbell Add-On, HD View, 2-Year Battery Monster Jam TIPS: Safety measures and professional

TIPS: Safety measures and professional installation are highly recommended

Each Alexa light bulb serves as a signal repeater so that even if a Bluetooth light bulb is out of reach from the amazon Alexa devices

Built-in 4000mAh ultra-large capacity battery

model number: CC270FZS

Blink Video Doorbell Add-On, HD View, 2-Year Battery Monster Jam TIPS: Safety measures and professionalVideo Doorbell is our second generation smart security doorbell with up to two years of battery life, an expanded field of view, and improved security features for more peace of mind, no matter where you are. Last longer with two year battery life Experience up to two years of continuous security coverage with three included AA Energizer lithium batteries and a Blink Sync Module (sold separately). See more at your door Greet guests and watch packages