The Size 3 Tibbo Project PCB works well when there is no need for a human-machine interface (HMI) yet needing many I/O lines and/or functions. The TPP3 board can replace PLC controllers or multitask as a safety, access control or security device. The TPB3 is quite ideal for factory, lab, shop, building, hotel, and home automation related projects. The TPP3 offers 7 tiles at a total of 14 "M" and 14 "C" sockets. It can construct devices with up to four full serial ports, having up to 25 relays, or up to 47 opto-inputs, PWM, and open-collector outputs. With so many Tibbit sockets made available, you are going to be able to increase the versatility of your system just by offering multiple power supply options like 5V, +12V, PoE.