II-type movements, a self-locking devices (lock marketing), the need to manually reset after switching off can be re-used.

型动作后有自锁装置(锁定销)，需要手动拉出复位后开关才能重新使用。

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With the bistability and self locking of the silicon photo negative resistance devices, these non linear photoisolators exhibit response maintaining function for the input signal.

由于光电负阻器件具有双稳和自锁特性，这种非线性光耦合器具有响应保持功能。

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