12 VOLT ARDUINO RELAY HOLDER w LATCHING RESISTOR
thingiverse
This is a 12v Arduino Relay Holder for Low Voltage applications. It can be used with a 2.2Kohm Latching Resistor soldered in under the PCB. This resistor will also drive the Pilot Light at the control point. This Circuit can be coupled with FR and WiFi Control Boards. 3mm or #4 Pan Head Screws can be used to mount this unit. If this relay is used with 110 volts it MUST be in a (CSA/UL) Electrical Approved Box. This Relay Module is available online, I got mine from Banggood for <$2 each.
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