Digital Hygrometer Indoor Thermometer 3 Pack, Room Thermometer with 5s Fast Refresh, Accurate Humidity Meter Temperature Sensor for Home, Bedroom, Baby Room, Office, Greenhouse, Cellar (Black) 4,095. $1899. List: $21.99. Save 5% with coupon. FREE delivery Thu, May 25 on $25 of items shipped by . Or fastest delivery Tue, May 23.