This is an PCA9555 board for expanding the virtual pins on a DCC-EX command station via an I2C connection.
The I2C can either be by Qwiic cables or Dupont cables.
It has provision for connection of an interrupt back to the command station.
There is provision for external power to the sensors.
The power connector, input/output and address headers are solder in place.
It does not include headers for the Dupont cables.
Includes one 50mm Qwiic cable.
This product will be in stock on Wednesday 14 May, 2025.
