GE IC660ELB912G是GE通用电气的一个模块，具体用途和详细信息我不是很清楚。但是，通常来说，像这种编码的模块通常是用于工业自动化和控制系统，可能用于各种设备的控制、监测或其他一些功能。

IC660EBD020 is a module of GE General Electric, and I am not very clear about its specific purpose and detailed information. However, typically, modules encoded like this are used for industrial automation and control systems, and may be used for control, monitoring, or other functions of various devices.