Analog to Digital Inputs
Digi radios are designed to interface with devices using a UART signal to communicate. While all the Digi radios can interface with UART, the XBee and XBee-PRO radios have the unique capability of also being able to interface with an analog signal via the analog-to-digital inputs available in firmware version 1.0A0 or later. 1.0A0 will shortly be released as a supported firmware version. The firmware is based on the 802.15.4 standard that will allow for up to six different analog-to-digital inputs with a maximum combined sampling rate of 1 kHz.