... Co., Ltd. provide you high quality products and good service. Voltage 0-36VDC Door LoopBTS-101:Link on Door and Door ... Frame Without Wires, Voltage 0-36VDC, Max. Working Current:5A, Special wear-resistant Vinylon MaterialBTS-102:Link ... on Door and Door Frame Without Wires, Stainess Steel Voltage 0-36VDC ...