Zhengzhou Branch source Electronic Technology Co., Ltd. is an industry expert in the field of consumer card, related to: business card, campus card, the district card. Its applications include: Dining Hall, water management, the control fingerprint access control, time and attendance management, savings and consumption, patrol system, membership management, water charges and other applications. We provide consumer devices, stable performance, quality assurance, the price is reasonable access control distributor in Zhengzhou Branch, work with us is your first. . Henan | Zhengzhou control access control Wholesale | Supply | Purchase | Price is China's best-selling brand of access control, installation of access control to choose Shuntong access control, door passed! Unmanned station installation access control: The school installed access control: access control application performance at school audio-visual equipment management in two ways, first podium below, or teachers in audio-visual equipment usually has a locker in the locker an access control system is installed, the teacher's time and legal jurisdiction is, remove the card audio-visual equipment for lectures. The second control power supply of some audio-visual equipment, such as power supply control slide projector, the teacher swipe card, slide projector power is supplied and can be used after school, in the swipe card, slide stop power supply, other non-authorized personnel can not be used. Zhengzhou Branch source Electronic Technology Co., Ltd. is an industry expert in the field of consumer card, the company is committed to the development of IC smart card "card" and RFID radio frequency systems and intelligent water saving product development, production and sales for clients on smart card "Card "and monitoring the series of comprehensive solutions. Involving: business card, campus card, the district card. Its applications include: Dining Hall, water management, the control fingerprint access control, time and attendance management, savings and consumption, patrol system, membership management, water charges and other applications. We provide consumer devices, stable performance, quality assurance, the price is reasonable access control, work with us is your first. Controls the access control is China's best-selling brand of access control, access control installation choose Shuntong access control, door passed! Using a drag of a power supply, a normal access by one lock the door, but the installation of an access control would not Zhengzhou Branch 850 wholesale access control, card lock did not respond, each access control machine has a signal line connected locked, probably because both access control and signal lines shorted together. I heard that the installation of a relay can solve this problem, I do not know how loaded on electronics do not quite understand, ask God to solve large, as shown now installed! Blue signal line, usually to 17V, card door power is low, measured with a multimeter seems to be 5V or less! Comet attendance access control access control wholesale _ _] [Kim Comet (View) provided by the Bureau of Zhengzhou City, the source Electronic Technology Co., Ltd. Zhengzhou City Branch source Electronic Technology Co., Ltd. (ysh119.china.b2b.cn/) strong, credible, in Zhengzhou, Henan attendance machine industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhengzhou Branch into the brilliant and you work for a better future!