Product review (5 stars): Highly Accurate Digital Hygrometer Indoor Thermometer Humidity Monitor with Temperature Humidity Gauge
This device works wonders around the mechanical version my wife and I kept in the bedroom.  It's super accurate and has a nice, clean design. The price is nice and only one alkaline battery required. We have also purchased its mate the ThermoPro TP60 to keep in the kitchen to monitor the outside temps and humidity as well.