Note:
1. Button Battery is not Included
2. The round meters have NEW Function: ℃/℉ Conversion; LCD display can be switch on/off. And square meters do not have the new functions at present

YIDI Mini LCD Digital Thermometer Hygrometer Gauge Tester Incubator Aquarium Temperature Humidity Meter Monitor Probe Sensor Detector Indoor Out Door

1. Round Type Mini LCD Thermometer Hygrometer

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 Type Digital LCD Temperature Humidity Meter 

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 ℃
Working Current: Max 4UA
Power Supply: 1.5V - 2pcs AG13 Button Battery (Not Included)

The round meters have NEW Function: ℃/℉ Conversion; LCD display can be switch on/off