The first type is relay output, which has a slow response speed and a large output current, generally reaching 2A, but has a short electric shock life and a low output frequency, with a maximum of 1HZ;
The second type is transistor output, which has fast response speed, low output current, long contact life, and high output frequency, up to 10KHz;
The third type is analog output, with specifications generally including 0-20MA current signal, 4-20MA current signal, 0-5V voltage signal, 0-10V voltage signal, etc.
