PRECISE READINGS: High-accuracy sensors provide precise temperature readings within 0.54F (0.3C) and humidity readings within 3% RH. CUSTOMIZABLE ALERTS: Set custom temperature and humidity thresholds to receive notifications when levels go above or below your desired range. COMPACT DESIGN: Sleek, compact device with a built-in stand for easy placement on desks, shelves, or countertops. SMART MONITORING: This WiFi-enabled thermometer/hygrometer allows you to remotely monitor indoor temperature and humidity levels via on your smartphone Battery: LR03 1.5V AAA * 2 (not include in package) Measure Range: -20C-60C ; 0%RH-100%RH Measure Accuracy: 1C ; 5%RH Color: White Material: plastic Package Contents: 1*sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.