According to examples of the present disclosure, an access point (AP) device, an Internet of Things (IoT) device, and a communication device are provided. The AP device may include an AP housing, a control board arranged within the AP housing, and a first electrical connecting part and a first assembly part arranged on the AP housing. The control board and the IoT device are electrically connected by the first electrical connecting part. The AP device may assemble with the IoT device by way of the first assembly part.