Mini Wireless(!) low-cost sensor stick equipped with: (Capacitive) Soil Moisture sensor, Barometer (Bosch BMP085), Humidity (DHT11 / DHT22), Soil Temperature, ambient temperature, calibrated LUX meter,  RFM12b and is Arduino based! Can upload data to Cosm service for easy graphing, plotting and logging. Works with single coin cell battery. Can be used wireless or the attached analog outputs.