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This 2 Channel 12V Relay Module with Optocoupler meets the safety standard as the control and load areas have isolation grooves
on touching the first led which is connected to the LEDA- stops glowing
The module has a 4A efficient MOSFET switch due to which its efficiency can reach up to 94%
It is Onsemi 7812T 12V 1A TO-220 Package Positive Voltage Regulator
5A Rated Power 53
LM393- Electret Microphone Module Mini Arduino This 2 Channel 12V RelayLM393 Electret Microphone module uses LM393 as its main Op Amp and is a single channel signal output sensor module. LM393 module has 3 pins which are Out, GND and VCC. GND is connected to the ground and VCC is connected to the positive terminal of the power supply. Out is an Output pin. Out pin is high when it does not detect any sound. It goes low whenever it detects sound in its surroundings. Out pin is connected to the digital pin of the
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