Patent ID: 7737849

Claim:
A switch detection device, comprising: a RFID tag provided with a reference voltage port and at lease one data input/output port; at least one conducting circuit loop provided with a first end and a second end respectively connected to the reference voltage port and the data input/output port of the RFID tag, having an open state and a closed state; and at least one switch electrically connected in the conducting circuit loop to actuate the conducting circuit loop in the open state or in the closed state, the switch including a portion displaceable between an open state position and a closed state position, the RFID tag, the conducting circuit loop and the switch being accommodated in a housing, the switch being driven by a lever combined with a resilient member and a rod, where the lever controls the switch through the rod; wherein the open state or the closed state of the conducting circuit loop is transmitted through the conducting circuit loop to the data input/output port of the RFID tag, and thereby a signal representing the open state or the closed state of the conducting circuit loop is detected by the RFID tag.