Raspberry Pi Stackable Card for Home Automation $22 to $35 Eight 12bit ADC Inputs; Eight Opto-inputs; Eight 2.5A/48V Relays with status LEDs One 12bit DAC Output; Four O.D. Outputs; Six GPIOs 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 2.5A/48V Relays with Status LEDs; Screw-mount Terminal Blocks I2C driven, 23 Raspberry Pi GPIOs available Eight layer stackable, expandable to 64 Relays Command line, Python, CODESYS drivers IN STOCK $25

Raspberry Pi Stackable Card for Industrial Automation $59 to $89 Four 4-20mA Inputs; Four 4-20mA Outputs; Four 0-10V Inputs; Four 0-10V Outputs Four Digital Inputs; Four Open Drain Outputs; Four 10A/250V Relays with status LEDs Command line, Python, CODESYS drivers IN STOCK $89

Raspberry Pi Stackable Card for Building Automation $49 to $79 Four Digital Inputs; Four Open Drain Outputs; Four 10A/250V 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 A must for all RPI mission critical installation: cycle RPI power after software lock-up Dual power supply jacks: micro-USB and barrel; Switch up to 3.5A/5V to Raspberry Pi On board resettable fuse; I2C driven, 23 Raspberry Pi GPIOs available Power manager: Program RPI to turn off and on on a schedule Command line, Python drivers OUT OF STOCK $20

DIN-Rail Mounting Kit for Raspberry Pi 0/2/3/4 $6 to $10 Mount any Raspberry Pi on a DIN-Rail Kit contains 2 DIN-Rail brackets, Raspberry Pi Adapter Plate and all hardware Hardware contains all screws, standoffs and nuts required IN STOCK $10

Break-out Card Type-1 for MegaIO-HOME & Raspberry Pi $7 to $12 Routes all 40 I/O and power pins to screw terminal blocks This card can be used both for Raspberry Pi and for MegaIO-Home cards Plug the 2x20 pin header into Raspberry Pi or into any stackable expansion card IN STOCK $12

Break-out Card Type-2 for Raspberry Pi $9 to $15 Add a prototype area for your hardware experiments Comes with stand-offs and all necessary hardware to install IN STOCK $15