Raspberry PiFace Digital 2 , Relays,Switches,Digital/Analog I/O

The PiFace Digital 2 is an add on board for Raspberry Pi that allows forconnecting things that will influence the world around it. It includescomponents like relays, switches, digital and analog I/O that will allow forconnection to sensors, motors, lights etc and can be controlled by Raspberry Piboard. The PiFace Digital 2 has been designed to fit the Raspberry Pi A, A+, B,and B+ models. This add on board fits neatly above the Raspberry Pi and connectsusing the expansion connector. Ensure that all expansion pins are lined up withthe holes on the PiFace Digital 2 socket.Features:- Two changeover relays- Four tactile switches- Eight digital inputs- Eight open collector outputs- 8 onboard LEDs for indicating the status of an application, debugging circuitsand codes- Graphical emulator- Easy to program in Python 3 and 2, scratch and C language- Support for interruptsApplications:Hobby & Education, Building Automation, Automation & Process Control, Security,System Monitoring, Embedded Design & DevelopmentFootnotes:Supplied with PiFace Digital 2 assembled and documentationWarnings:Ensure that no power is supplied to Raspberry Pi or PiFace Digital 2 boards whenplugging or unplugging.