The CR211 Datalogger integrates an on-board 922 MHz spread-spectrum radio with the functionality of the CR200 Datalogger, providing both measurement and telecommunication capability in one small package. The CR211's input channel configuration and small size are optimal for measuring one or two sensors. When paired with an ENC200 enclosure and the small 16869 battery, the packaged CR211 has a deployment size of only 6 inches by 7 inches. If an alternate spread-spectrum radio is required, see our CR206 and CR216 dataloggers.