... control connectivity for Wigand-out, Door lock connection, Alarm Clock, Exit switch. It adopts ... sensor. The patented optical sensor is resistant to scratches, impact, vibration and electrostatic Shock. ... , good price with good performance. T3-B -time attendance and door access control system RS232, TCP/IP ... of calendar which is on an equal footing with PC. . Sensor with quality image, accepts dry, ...