System and method for controlling heterogeneous internet of things (IoT) devices using single application

Certain aspects direct to systems and methods for controlling heterogeneous internet of things (IoT) devices. The system includes a gateway device, which is communicatively connected to a control device under a first protocol and to multiple authenticated IoT devices under corresponding protocols. In operation, the gateway device receives a command from the control device, which is directed to a selected IoT device. Based on the command, the gateway device may select a corresponding API, and determine the corresponding network and the corresponding protocol specific for the selected IoT device. To send the command to the selected IoT device, the gateway device first determines whether the corresponding protocol for the selected IoT device is different from the first protocol. If so, the gateway device converts the command to a second command transmittable under the corresponding protocol for the selected IoT device, and sends the converted command to the selected IoT device.