Integrated 3 × 2VGA signal automatic switch matrix, long drives with 400MHZ, support desktop computers, laptop computers, digital input booth Delay protection comes with the projector, automatic delay off.Better protection of life of the projector Embedded IR learning function, no need to configure the professional learner, the use of more simple, more reliable learning Built-in video matrix 2 × 1 Built-in stereo audio matrix of 3 × 1 2 programmable RS-232 control interface, 1 control the projector, a road connected to the computer Built-in stereo volume control 1 channel I / O control port, the connection card reader, credit card or with a credit card that is off 1 channel infrared transmitter interface, can learn IR codes to control the projector 17-key full-featured panel, panel built-in VGA, audio, network and USB interface, enhanced USB 5V power supply, can be easily connected mobile hard disk and other large power equipment Independent electric screen, projector power control box timing delay, and enhance the stability control system Reserve network module interface, supports remote network control, to achieve the network teaching Built-in computer switch machine interface, no start button at the host computer Can be accessed by external intelligent electronic lock controller, which can control five electronic locks, long-term continuous power without burning Support in the control panel operation, computer software operation, network software operating three operational methods At the same time linked with credit card "card" function and a key class, a key class of the "push to talk" feature Card function, the control software with independent intellectual property rights, copyright certificate has been made Split structure of the strength of electrical isolation, to ensure electrical safety, in line with GB4943-2001 "Safety of information technology equipment" safety standards, National Quality and Technical Supervision has been made in inspection reports The whole injection molding process, beautiful, and can prevent leakage risk Full-chip technology using high-quality, high-volume production, with high compatibility, stability and cost-effective. Power through the CQC certification