If you want to make your own system for doing so, Instructables user ICStation shows off how to use an Arduino to do it. The system here monitors temperature, humidity, and smoke levels and alerts ...

The Anavi Thermometer Development board is fully compatible with the Arduino IDE ... It comes with a built-in DHT22/AM2302 temperature and humidity sensor and has slots for a mini OLED display ...

Arduino has announced four new Nano microcontroller-based boards ... a nine-axis Inertial Measurement Unit, as well as temperature, pressure, humidity, light, color, and gestures sensors.

humidity, digital proximity, ambient light, gesture sensor, and a microphone. Pre-orders for these two are slated to begin shipping this July. The new Arduino Nano designs bring a lot of power to ...