JD861 Digital Temperature and Humidity Meter LCD Display with Backlight ℃/℉ Adjustable Support Data Hold Function

JD-861 is a battery-powered instrument for measuring relative humidity and temperature. It can display three different ambient temperature, wetbulb temperature and dew point temperature of the air around its sensor.

Features:
Digital temperature and humidity sensor, high accuracy with quick measurement speed.
LCD display, you can see the humidity, temperature, min and max value clearly.
Short press the M button to switch between maximum and minimum.
Long press the M button for 2 seconds to turn on automatic shutdown, and automatically shut down after 30 minutes. The factory default is off. 
Short press the ☀ button to switch temperature unit, switch sequence: ℃→℉→℃ Dewpoint-℃ Wet Bulb-℉Dewpoint-℉ WetBulb.
Long press the ☀ button for 2 seconds to turn on the backlight. The factory default is to turn off the backlight.
Data-hold funtion: short press the H button to freeze the current reading.

Specifications:
Name: Temperature and Humidity Meter
Model: JD-861
Material: ABS
Battery: 1 * 6F22 battery (not included)
Measuring-range: -30℃ to 100℃(-22℉ to 212℉) 
Accuracy: ±0.5℃ (25℃, 20%RH-80%RH); ±0.9℉ (77℉, 20%RH-80%RH); ±0.8℃/±1.5℉
Relative humidity-range: 0-100% RH 
Accuracy: ±2%RH (25℃/77℉, 20%RH-80%RH); ±2.5%RH (Other range) 
Resolution: 0.1%RH 
Working environment Temperature 5°C-40°C (41℉-104℉) Relative humidity: < 85%RH 
Non-condensing air-pressure: 100 kPa-80 kPa
Item size: 155 * 102 * 45mm / 6.10 * 4.02 * 1.77in
Item weight: 140g / 4.94ounce
Package size: 160 * 110 * 50mm / 6.30 * 4.33 * 1.97in
Package weight: 150g / 5.29ounce

Packing List:
1 * Temperature and Humidity Meter