Tag is low level trigger
Relay&Relay Module 2-way relay module with opto isolation, low level trigger 5V/9V/12V/24V
Product description:
1 , the module complies with international safety standards, the control area and the load region isolation trench ;
2 , using double-sided FR-4 circuit board design , high-end chip production process ;
3 , part of the relay contacts using double-sided bold wiring , safe ...Read More
2-way relay module with opto isolation ,low level trigger 5V/9V/12V/24V 
Relay&Relay Module 4 channel relay module with opto isolation, expansion boards low level trigger 5V/9V/12V/24V
4 channel relay module with opto isolation, expansion board ,low level trigger 5V/9V/12V/24V
Product description:
1 , the module complies with international safety standards, the control area and the load region isolation trench ;
2 , using double-sided FR-4 circuit board de...Read More
4 channel relay module with opto isolation,low level trigger 
Delay module High / low level trigger delay switch module. Delay circuit delay relay module 5V/9V/12V
Application:
This module is a high or low trigger delay module can be used in a variety of intelligent systems development , Arduino robotics , automation equipment control , PLC industrial control, electronic development.
Product description:
1 The use of advanced chip ...Read More
High / low level trigger delay switch module 
