This application can be used to control up to three Astro Core Intervalometer accessory devices. These devices can be purchased at www.orderastro.com. These devices work to provide simultaneous pan, tilt, and linear motion for your DSLR camera. Please check the support page on the Astro Core web page for camera compatibility. They are controlled by this application over a Low Energy Bluetooth interface to the Astro Core devices. The Astro Cores are connected by cable to your cameras light and shutter remote control interface. This application uses BLE and does not support Wi-Fi.