Standard Product Features: 1) with a variety of devices with card reader attached to the receiver signal relay switch work. 2) can be an external switch button or remote control, to achieve one-way or two-way traffic control. 3) with automatic reset function, when the arm is open, closed automatically after a certain delay (delay sub-2S, 5S, 10S, 60S adjustable). 4) mechanical pinch: The main gate is to rely on the machine to achieve the rational design of mechanical machinery pinch itself, when the body is blocking arm or run, the system will automatically detect and stop the run, a small swing arm strength, will not hurt or things. 5) human self-protection: A, when the body is blocking arm or run-time, continuous monitoring system 1-5 times every 5 seconds, as yet to lift obstacles, the system automatically stops the normally closed at this time part of the device is in sleep mode, avoid burn the original device. When receiving the next valid access instruction, the system also automatically return to normal. B, when the system fails to detect a reset signal (ie, arm playing chassis), the system automatically detects 1-5 times, each time for 5 seconds, as has been reset signal is not detected, then the arm lock automatically return to normal state . (This protection function: even light damage even if the reset, the system can still insist on using absolutely will not burn out the circuit or motor phenomenon.) 6) The switching speed of 0.8-2 seconds adjustable: min 16 stalls, according to opening speed adjustment switch for freedom. 7) normally open, normally closed adjustable: via external button or remote control for easy normally open, normally closed mode switch. 8) power failure normally open, so that the arm automatically after power is turned on, turn the direction of adjustable arm. 9) High Brightness LED: can still clearly visible in daylight or sunlight. 10) human traffic instructions: usually does not shine, it was legitimate traffic when the green arrow flashing, access is completed automatically extinguished. 11) synchronization adjustable arm (for the double pendulum case).