Feature:1. DISPLAY REAL TIME TEMPERATURE AND HUMIDITY: The screen displays real time temperature and humidity, clear digital display is easy to read2. EXTERNAL TEMPERATURE HUMIDITY PROBE: External temperature and humidity probe can test the temperature of another enclosed environment3. GOOD QUALITY MATERIALS: Humidity temperature gauge is made of good quality materials, ensure durability and practicality4. 1 MEASUREMENT ERROR: Temperature measurement range from -50~70, measurement error for 1, resolution is 0.1, humidity range from 10%-99%RH5. DURABLE FOR A LONG SERVICE LIFE: This humidity temperature meter is accurate, portable and durable for a long service lifeSpecification:Item Type: Humidity Temperature GaugeModel: DTH-74Temperature Measurement Range: -50~70Measurement Error: 1Resolution: 0.1Humidity Range: 10%-99%RHBattery Information: 1 x 1.5V 600mAh AAA dry battery(not included).Package List:1 x Humidity Temperature GaugeNote:The probe has a suction cup that can be attached to smooth objects that need to be measured.