1.1 Definition of switch module
A switch module is an electronic device used to receive and process switch signals. It can convert switch signals into digital signals to control the device. The switch module is widely used in industrial automation, building automation, smart home and other fields.
1.2 Classification of switch modules
According to the different input signals, switch modules can be divided into two categories:
(1) Normally Open (NO): When the input signal is high, the output signal is high.
(2) Normally Closed (NC): When the input signal is low, the output signal is high.
1.3 Function of switch module
The main functions of the switch module include:
(1) Signal conversion: Convert switch signals into digital signals for subsequent processing.
(2) Signal isolation: Implement electrical isolation between input and output signals to improve system safety.
(3) Signal filtering: Filtering the input signal to eliminate noise interference.
(4) Signal amplification: Amplify the input signal to improve its stability.
