Abstract: A transceiver device includes a transmitting unit, a receiving unit, and a detection unit. The transmitting unit transmits a first packet; the receiving unit receives a second packet and at least one receiving parameter; the detection unit is coupled to the transmitting unit and the receiving unit, and detects the first and the second packets to adjust the receiving parameter. When the detection unit detects that the first and the second packets are substantially the same, the detection unit pauses adjusting the receiving parameter.

Abstract: A transceiver device includes a transmitting unit, a receiving unit, and a detection unit. The transmitting unit transmits a first packet; the receiving unit receives a second packet and at least one receiving parameter; the detection unit is coupled to the transmitting unit and the receiving unit, and detects the first and the second packets to adjust the receiving parameter. When the detection unit detects that the first and the second packets are substantially the same, the detection unit pauses adjusting the receiving parameter.

Abstract: A cap device of a gas cylinder valve is sheathed on an exhaust valve of a high-pressure gas cylinder and is primarily constituted by a cover and a base. The cover is formed with a holding space, a wall of the cover is formed with a corresponding perforation, and an inner side of the wall is defined with a locking part by which the cover can be locked with a fixing part of the base. On the other hand, pre-determined positions on the fixing part are provided with plural positioning members at corresponding positions. Therefore, after the cover has been locked and assembled with the base, the cap device can be installed on the high-pressure gas cylinder, thereby preventing the exhaust valve from being damaged by impact of a foreign object.