The Si7005 is supported by a suite of hardware and software development tools that facilitate testing/characterization, prototyping and software development. The Si7005USB-DONGLE evaluation kit comes with everything developers need to demonstrate and evaluate the Si7005. The board plugs into a PC via a USB socket. It has a connector for adding the Si7005USB-EVB. The optional Si7005-EVB is a small daughter card that permits evaluation of the Si7005 at the end of a flex cable. It is a useful add-on to the Si7005USB-DONGLE (it plugs right in) if the user wants to put a sensor in a temperature/humidity chamber or a product prototype. The Si7005EVB-UDP is a small daughter card that permits evaluation of the Si7005 in conjunction with certain Unified Development Platform (UDP) components such as the C8051F960 Ultra-Low Power Microcontroller Development Kit (C8051F960-A-DK). It plugs directly into UDP MCU cards for fast prototyping and software development. In addition to an on-board Si7005, there is a connector for adding an Si7005-EVB via its flex cable, allowing the user to place the Si7005 in a temperature/humidity chamber or a product prototype. Finally, the Si7005EVB-UDP-F960 Development Kit combines the C8051F960 Ultra-Low Power Microcontroller Development Kit (C8051F960-A-DK) and the Si7005EVB-UDP daughter card with data logger demonstration code. It is a complete package designed to support hardware and software development using the Si7005 and Silicon Lab’s ultra-low power MCUs. It ships with example software that implements a portable, battery-powered data logger/asset tracker.