Raspberry Pi Stackable Card for Home Automation $22 to $35 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available Command line, Python, CODESYS drivers IN STOCK $35

8-Relay Stackable Card for Raspberry Pi $15 to $25 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available Command line, Python, CODESYS drivers IN STOCK $25

Raspberry Pi Stackable Card for Industrial Automation $59 to $89 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available Command line, Python, CODESYS drivers IN STOCK $89

Raspberry Pi Stackable Card for Building Automation $49 to $79 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available Command line, Python, CODESYS drivers IN STOCK $79

Hardware Watchdog HAT for Raspberry Pi $13 to $20 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available Command line, Python drivers IN STOCK $20

DIN-Rail Mounting Kit for Raspberry Pi 0/2/3/4 $6 to $10 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available IN STOCK $10

Break-out Card Type-1 for MegaIO-HOME & Raspberry Pi $7 to $12 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available IN STOCK $12

Break-out Card Type-2 for Raspberry Pi $9 to $15 Eight 12bit DAC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs Four layer stackable, I2C driven, 23 Raspberry Pi GPIOs available IN STOCK $15