Abstract: The present invention relates to a multi-role Bluetooth device and more particularly to a multi-role Bluetooth handset. The multi-role Bluetooth device stores a plurality of SDPs (Service Discovery Protocols), and establishes Bluetooth connection with an electronic device by one of SDPs. The multi-role Bluetooth device can establish Bluetooth connection with the electronic device by a first SDP, and transmit and/or receive data to the electronic device each other via Bluetooth connection. Furthermore, the multi-role Bluetooth device also can establish Bluetooth connection with the electronic device by a second SDP, and transmit a control signal to the electronic device via Bluetooth connection to control the electronic device to execute particular function thereof.

Abstract: The present invention relates to a multi-role Bluetooth device and more particularly to a multi-role Bluetooth handset. The multi-role Bluetooth device stores a plurality of SDPs (Service Discovery Protocols), and establishes Bluetooth connection with an electronic device by one of SDPs. The multi-role Bluetooth device can establish Bluetooth connection with the electronic device by a first SDP, and transmit and/or receive data to the electronic device each other via Bluetooth connection. Furthermore, the multi-role Bluetooth device also can establish Bluetooth connection with the electronic device by a second SDP, and transmit a control signal to the electronic device via Bluetooth connection to control the electronic device to execute particular function thereof.

Abstract: An exemplary embodiment of environmental monitoring system includes a base station, a monitoring control device and a monitor device. The monitoring device is communicated with the monitoring control device and the base station by wireless communication network. The monitoring control device sets monitoring instructions and sends the monitoring instructions to the base station in the form of short message using wireless communication network. The monitoring device receives the monitoring instructions in the form of short messages, generates corresponding monitoring data according to the monitoring instructions to obtain corresponding monitoring results, and transmits the monitoring results to the base station and the monitoring control device in the form of short messages.