The SRF613 is used for wireless temperature and humidity
measurements for ambient environments.

• External Thermistor Sensor Probe Range: -18°C to +55°C (-0.4°F
  to +131°F)
• Humidity High Accuracy: +/-3% RH range 10 to 90% RH
• Selectable Scales: °C, °F, Dew Point and %RH
• Battery Life: Up to 2 years
• Warranty: 1 Year

.The SRF613 Wi-Fi Temperature and Humidity Transmitter utilizes a high accuracy digital sensor for stable measurement of humidity over many years and can be calibrated to remove small offset values.