Three roller gates: a) define the left and right: the face of three roller gates, three roller gates being left brake lever clockwise, three roller gates counterclockwise rotation of the brake lever is on the right; 2) busbar connection: connection by terminal block identification the power and gate signals; 3) three roller gates Input Interface: +12 V level signal or pulse width> 100ms DC12V pulse signal, the drive current> 10mA or dry contact signal or RS485 signals; specify: provides three roller gates There are three kinds of gate signal connection: A, three roller gates dry contact signal: VDD is common, OPE-L and OPE-R, respectively, and VDD short open on the left and right respectively ON signal; B, +12 V power level signal or DC12V pulse signal: GND as a common terminal, OPE-L and OPE-R and GND, respectively, to form a high, low open circuit on the left and right, respectively, the open signal (Note: The high pick OPE-L or OPE -R); C, RS485 signals: TA, TB was A +, B-, GND is the common ground. 4) three roller gates free movement in one direction: Adjust the nut so that the stroke of the solenoid valve positioning arm open, you can make a one-way gates free passage. Note: The three roller gates please adjust positioning screw nut firmly fixed to avoid loosening can cause one-way free passage. Shenzhen City and Technology Co., Ltd. specializes in three roller gates, swing gates, wing gates, full height turnstiles Product description From: http://www.szshanghe.com.cn