Note: Button Battery is not Included Mini LCD Digital Thermometer Hygrometer Gauge Tester Probe Incubator Aquarium Soil Temperature Humidity Meter Sensor Detector Indoor Out Door 1. Round Type Mini LCD Thermometer Hygrometer Gauge Instrument Specification: Cable Length: 140cm Mounting Holed Diameter: 41mm Appearance Diameter: 45.2mm LCD Diameter: 27mm Dispaly Type: LCD Color: Black/White Temperature Test Range: -50~70 Humidity Test Range: 10%~99% Temperature Accuracy: 1 Humidity Accuracy: 5% Humidity Sampling Period: 10s Humidity Display Resolution: 1% Power Supply: 1.5V DC - 1pc AG13 Button Battery (Not Included) 2. Square Digital LCD Temperature Humidity Meter Detector Monitor for Car Pet zer Tester Specification: Cable Length: 100cm Mounting Holed Dimension: 46x27mm Appearance Dimension: 47.8x28.5x15.2mm LCD Dimension: 35.7x16.8mm Dispaly Type: LCD Color: White / Black Temperature Test Range: -50~70 Humidity Test Range: 10%~99% Temperature Accuracy: 1 Humidity Accuracy: 5% Humidity Sampling Period: 10s Humidity Display Resolution: 1% Power Supply: 1.5V - 2pcs AG13 Button Battery (Not Included) 3. Square Type Digital Temperature Meter Inner Sensor Detector Specification: Cable Length: 100cm Mounting Holed Dimension: 46x27mm Appearance Dimension: 47.8x28.5x15.2mm LCD Dimension: 35.7x16.8mm Color: White / Black Temperature Test Range: -20~110 Temperature Accuracy: 1 Working Temperature: 0~50 Storage temperature: -10~60 Power Supply: 1.5V - 2pcs AG13 Button Battery (Not Included) Working Current: Max 4UA