Best Humidity Logger For Beekeeping

Elitech RC-51H PDF USB Temperature and Humidity Data Logger Reusable Recorder - Black

【Multi-use Data Logger】Adopts a sensor with high accuracy and records up to 32,000 temperature points and 32,000 humidity points..
【Plug and Read】No cable or reader required, the USB connector enables quick connection to PCs to download data..
【Wide Temperature Range】 Temperature measuring range: -40℉~185℉. Max. accuracy reaches to ±0.9 ℉(temperature).
【Powerful LCD Indication】Provides all key information for recordings incl. alarm status, temperatures statistics (in ℃/℉) and etc..
【Please email/message us for the calibration certificate.】【2-Year Battery Life*】Powered by CR2450 lithium battery that comes along for free and the battery could last up to 2 years*. 24/7 US Technician Support via Email and Phone..

Weather information display on main unit or mobile app via Bluetooth V4. 0 connectivity.
Led backlight with 7 day data logger built in.
with daily memory for in/outdoor temp and humidity.

ECOWITT USB Temperature Humidity Data Logger with 2,0736 points large record capacity can measure and record data at specified intervals ranging from once every 8 second to once every 4 hour..
Designed to satisfy the dynamic demands in any sensitive storage and transportation system..

When the Android phone can't connect the Bluetooth thermometer, try the following: 1. Restart the Bluetooth phone. 2. Turn on the "position....
Multi-device connection: The gateway can connect multiple thermometers and hygrometers, allowing you to view the data of any thermometer and....
Alert Notification：You can adjust the maximum and minimum values of temperature and humidity according to your needs. When it exceeds the preset....
jaalee Wireless WiFi Gateway and Temperature/Humidity/Dewpoint/VPD Smart Sensor Thermometer/Hygrometer Data Logger Export - Monitor Greenhouse Grower....
Free Data Storage And Export：You can view hour/day/week/month/year data as needed, allowing you to view historical temperature and humidity records....

Min/max/average readings from the captured data, data hold and selectable auto power off.
Includes 2 type K temperature probes and four AAA batteries.
Displays humidity, dew point, wet bulb, temperature and temperature differential.

CARBON DIOXIDE METER: Autopilot APCEM2 Desktop CO2 Monitor and Data Logger Monitors carbon dioxide, relative humidity, and temperature of your grow room or greenhouse on a clear LED screen.
MEMORY: Digital memory chart shows and records stats over an adjustable 24-hour or 7-day period.
The trend chart shows variable Min/Hr/Day/Wk for readings of CO2/RH/Temperature.
SENSOR & ALARM: 2-channel low drift NDIR gas sensor and audible alarm for low or high CO2 levels.
OPERATING TEMPERATURES: Operates in temperatures 32 to 122 degrees F.
Operating and storage relative humidity (RH): 0-95%, noncondensing.
FUNCTIONALITY: Features multiple hanging options with the hook-and-loop fastener along the back that attaches to an external battery pack (battery pack not included).
Green power supply is compatible with a standard smartphone charger.
Dimensions (L x W x D): 4.7 x 3.6 x 1.1 inches.

2 Smart Logger Ambient Temperature and Humidity Recorders.
Also includes: Carrying Case, Extensions, Protective Caps, Stainless Steel Covers, Certificate of Calibration, Floor Map, Instruction Manual, Battery.

MULTI-USE AND LARGE CAPACITY. Up to 32,000 temperature points. Continuous record for over 3 months at a 5-minute log interval..
BLUETOOTH CONNECTION. One-click pairing, program/manage logger remotely by Elitech iCold App within a few meters ranges. Free App available for both iOS and Android, make cold chain management much easier..
LONG WORKING LIFE. Adopting a replaceable lithium battery, it can be stored and used within 2 years. Logged data won't be lost even out of battery. Power by USB optional..
HIGH PRECISION INTERNAL SENSOR. A wide temperature and humidity range from -22°F to 158°F and 10% to 90% with high accuracy, up to ±0.6℉ and ±3%RH, more suitable for a variety of temperature and humidity sensitive products..
PLEASE EMAIL/MESSAGE US FOR THE CALIBRATION CERTIFICATE. Hold button to restart. Click the button to switch from different interfaces to display current data, Max/Min data, logged point, and alarm status..