Review on Tolako Arduino Indicator Channel Official by David Gagnon
Doesn't work at 3.3V
When I control the device with nodemcu, I can wake it up and let the built-in red LED light up, but there is no communication between the connection on the middle load side and the NC connection. I tried the first with a 115 volt connection, the second I just checked with an ohmmeter - there is no connection. I later realized that this is a 5V device and only 3.3V on the Nodemcu. Tested the relay with an Arduino Uno 5V and it works fine.
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