Set the main switch selector to a (auto) or m (manual).
把主选择开关转到a(自动)或M(手动)。
2
Further more, there are three different working modes, namely the auto, the manual and the defrosting, for the clients to choose and switch.
此外，该系统还提供自动、手动和除霜等三种工作方式供用户选择，并能在这三种工作方式之间进行切换。
3
In such situations, you will probably get better results if you use the plain TTL or non-TTL Auto mode. In some cases, you may need to take full control and switch to Manual mode.