6PCS PC817 2 Channel 4 Channel Voltage Converter Module Optocoupler Isolation...
$13.56

Driving Port Signal Voltage:3.3-24V; Output voltage range: 3.6-30V(The output current depends on the specific situation but no more than 10MA;When the total power is fixed, the voltage and current are inversely proportional.)
Jumper Cap:The jumper cap can achieve high potential output or low potential output
Note:If it is a pulse signal, please note that the limit of 817 is below 3KHZ. If the control signal is more than 3KHZ, do not use this module, it will not work properly
Package Content:3 x PC817 2 Channel+3 x PC817 4 Channel Optocoupler Isolation Board

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