Eve Aqua – Smart water controller for Apple Home app or Siri, irrigate automatically with schedules, easy to use, remote access, no bridge, Bluetooth/Thread, HomeKit The Eve app enables control of this device, while providing insights on water consumption from the comfort of your iPhone or iPad. Apple HomeKit compatibility offers ease of use, data encryption, and Siri voice commands. Bluetooth Low Energy and Thread technology allows for operation without requiring a bridge. Two AA batteries are included for operation. This device's enclosure is IPX4 rated for protection from water.