Tag is high level
Electronic Modules Active buzzer module, high level trigger buzzer panel
Active buzzer module, high level trigger buzzer panel
module description：
1 module using S8050 transistor drive
2 Operating voltage 3.3V-5V
3 with fixed bolt hole for easy installation
4 small plates PCB size: 3.2cm * 1.3cm
5 When the I / O port input high, the buzzer s...Read More
Active buzzer module, high level 
Relay&Relay Module 1 road with a coupler relay module,Expansion board high 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 , the module with opto isolation , triggering more reliable, more stable ;
3 , using double-sided FR-4 circuit board design , high-end chip producti...Read More
1 road with a coupler relay module high level trigger 
Relay&Relay Module 1road relay module expansion board,High 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, using loose music authentic relay control ;
4, with power supp...Read More
1 road relay module, High level trigger 
Relay&Relay Module 2-way relay module with opto isolation,Expansion board high level trigger 5V/9V/12V/24V
2-way relay module with opto isolation,Expansion board high 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 c...Read More
2-way relay module with opto isolation, high level trigger 
Relay&Relay Module 2-way relay module expansion board, high level trigger 5V 9V 12V 24V
2-way relay module expansion board, high 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 productio...Read More
2 -way relay module, high level trigger 
Relay&Relay Module 4-channel relay module expansion board high level trigger 5V/9V/12V/24V
4-channel relay module expansion board high 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 prod...Read More
4-channel relay module high level trigger 
Relay&Relay Module 4 channel relay module with opto isolation, expansion boards high 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 and ...Read More
4 channel relay module with opto isolation , high level trigger 
