HiLetgo 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger sold2024 Its a suitable tool if

Its a suitable tool if you want to do some household or commercial improvements whether DIYers or Hobbyists

Size: 1/4 inch-20 X 4 inch

Size: 57*10mm/2

or other brand same size holder You can search Asin of this kit: B07MDC5LMX on Amazon to buy it

HiLetgo 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger sold2024 Its a suitable tool ifHiLetgo 12V 4 Channel Relay Module with OPTO Isolated Support High and Low Level Trigger 12V 4 Channel Relay Module With OPTO Isolated Support High and Low Level Trigger Description : 1. The module uses genuine quality relay , normally open interfaces Maximum load : AC 250V 10A, DC 30V 10A; 2. Using SMD OPTOCOUPLER isolation , driving ability , stable performance ; trigger current 5mA; 3. The module voltage is 12V; 4. Each way module can be set high