Contains everything you need to be alerted to the doorbell phone/VP in 2 rooms, in addition to receiving alerts directly through your smartphone. SquareGlow Smart WiFi HomeKit gives you a complete home doorbell and VP / phone alert system. The doorbell phone transmitters send signals to the included flashing receivers when someone is at the door or calling you on your landline phone or videophone. It also pairs with the free SquareGlow iOS Android apps, allowing you to control your system directly from - and receive notifications directly on - your smartphone! Features: Wi-Fi enabled compatible with SquareGlow iOS Android smartphone apps Personal scenes schedules are fully customizable in the app Includes 2 receivers that can flash your choice of 7 customizable LED light colors in up to 2 rooms, plus notifies you directly through your smartphone! Program different color lights to go off for different transmitters, so you always know where the signal is coming from. 52 customizable ringtones with adjustable volume (up to 120dB) Wireless range 200 yards (600 feet) Unlimited # unit pairing ? pair with as many flashers, doorbells or other SquareGlow accessories with easy frequency code settings One year warranty Includes: (2) Smart WiFi Flashers (1) Doorbell (1) Phone/VP Signaler (2) 10-foot Micro USB cables (2) USB adapters Mounting accessories Feature Details Brand SquareGlow Warranty One year warranty Color White Weight (lbs) 2.46 Battery operated? Yes (batteries required) Batteries included? No Battery details (3) AA Alkaline for each receiver; (1) 12V 23A Alkaline for each transmitter Country of Manufacture China System SquareGlow Alert Type(s) Vibration Flashing Light Loud Audible Low Vision / Deaf-Blind No Yes Yes No Transmitter / Receiver Transmitter(s) and Receiver(s) Alert Trigger(s) Baby Cry Carbon Monoxide Mobile / Smartphone Doorbell / door knock Motion Pager / SOS Phone / VP Smoke / Fire Sound Severe Weather No No No Yes No No Yes No No No Range (ft) 600 Expandable Yes Portable Yes Battery backup Yes USB charger No