What do R8, R9, R 10 and R 1 1 in LTE mean?
R should be a wrong number, K= 1000 ohm m = 1000 k = 100000 ohm. For example, R8 is the name of the resistor, and 10K is the resistance value of the resistor, that is, 10000 ohms. The switch on K2 is the normally open contact of K2 relay. When K2 is energized, the switch will be closed.