Light across terminal market Shang existing of name many, as: photoelectric disaster-in device, and photoelectric isolation device, and light across terminal, and photoelectric disaster-in type wiring Terminal row, and terminal type photoelectric Lotus-in device,; also, as: by output voltage high and low, can min high pressure type photoelectric disaster-in device and with special circuit of Schmidt type photoelectric Lotus-in device; I company is according to its principle and function named for photoelectric disaster-in type wiring Terminal, short light across terminal.

Optical isolation principle is triggered by input of the Terminal loop of light emitting transistor breakover diode output circuit to achieve electrical isolation between input and output circuit. Automatic control of core is control unit must and all sensor and implementation device reliable to isolation open, so as not to interference, joint Czech electric of light across terminal to is good to completed this a function, and guarantee site signal and electronic control device by requirements of low voltage phase match, also can for process control of perimeter device and control, signal and regulator device Zhijian of interface components, and applies Yu different of voltage and power range.

Terminals for optical isolation with control-end signal loss, high switching frequency, no mechanical contact jitter, wear-free switching, high isolation voltage, fear of vibrations, not affected by position and long life and other advantages, so widely used in the field of automatic control.