What are the wires connected to the various devices in the fire protection electrics? For example, smoke, temperature, hand report are connected to what kind of line?

Traditional ordinary smoke, temperature, input module on the two signal lines; hand report signal line, such as telephone jack + telephone line; input and output modules, coded sound and light, coded infrared beam, hydrant button is a signal line + power line.

Your question is a relatively small number of types of equipment, but the entire fire alarm a wide variety of types, in fact, on the smoke detector really on the division of a variety of types. For example: traditional smoke detection, infrared beam, very early air sampling and so on.

If you don't understand, you can ask.

If you don't understand, you can ask.