Maxim presents a complete reference design for engineers prototyping their next building automation design. The MAXREFDES130# is an Arduino form-factor shield that is compatible with Arm mbed and Arduino platforms. This evaluation kit includes eight 0 V_DC to 10 V_DC analog outputs, one 4 mA to 20 mA output, one 4 mA to 20 mA input, eight non-latching relays, three latching relays, an RTC, and 1-Wire® master. The MAXREFDES130# works well with one or more of the MAXREFDES131#, the 1-Wire, Grid EYE® sensor, to make a complete building automation solution.