People seem to like this thermometer / hydrometer, as it receives very good reviews.  The

• Digital thermometer | Monitor indoor & outdoor temperature, directly from the room thermometer
• Hygrometer | Humidity gauge allows you to track comfort levels inside & outside your home
• Wireless | Humidity and Temperature Sensor is weather resistant and can be placed indoor or outdoor
• Accurate | Wireless thermometer comes pre-calibrated for precise temperature and humidity readings
• Easy to Read | Large thermometer screen allows you to check weather conditions at a glance