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Kestrel DROP D2 Temperature, and Humidity Monitor

Enjoy superior weather protection thanks to an included rainfly, welded corners, and inverted seams to keep water from getting in.

Kestrel DROP D2 Wireless Temperature, and Humidity Data Logger

A Kestrel DROP is the world’s easiest-to-use rugged environmental data logger. Available in three models – the Kestrel DROP D1 Temperature Logger, the Kestrel DROP D2 Temperature and Humidity Logger, and the Kestrel DROP D3 Temperature, Humidity and Pressure Logger – all three models allow you to monitor and record the conditions of any environment and easily access and chart real-time and historical data on your phone, tablet or other smart device.

The Kestrel DROP D2 data logger can be placed wherever needed to log temperature and humidity with the data logs retrieved wirelessly and automatically to the Kestrel LiNK app when within wireless range(up to 100’ or more line of sight).

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Features

Each DROP measures just 1 x 1.8 x 2.4 inches (24 x 46 mm x 60 mm) and weighs just 1.2 ounces (34 grams).  DROP loggers meet military and international standards for water, dust and shock resistance (IP-67 and MIL-STD-810G) and are conveniently equipped with a sturdy d-ring for hanging wherever needed.

  • Drop-Tested to MIL-STD-810G
  • Floats
  • LiNK Wireless Communication to Mobile Devices (Bluetooth low energy)*
  • Relative Humidity Sensor
  • Temperature Sensor (Patented External Isolated)
  • Waterproof to IP67 (3’/1M for 30 minutes)

In The Box

Battery – 1 x CR2032

Certificate Of Conformity (Spec Sheet)

Instructions

DROPs Are Powered by the Kestrel LiNK App

A Kestrel DROP is the world’s easiest-to-use rugged environmental data logger. Available in three models – the Kestrel DROP D1 Temperature Logger, the Kestrel DROP D2 Temperature and Humidity Logger, and the Kestrel DROP D3 Temperature, Humidity and Pressure Logger – all three models allow you to monitor and record the conditions of any environment and easily access and chart real-time and historical data on your phone, tablet or other smart device.

The Kestrel DROP D2 data logger can be placed wherever needed to log temperature and humidity with the data logs retrieved wirelessly and automatically to the Kestrel LiNK app when within wireless range(up to 100’ or more line of sight).

Specification

SENSORS
SENSORS
ACCURACY (+/-)
RESOLUTION
SPECIFICATION RANGE
AmbientTemperature
0.9 °F
0.5 °C
0.1 °F 0.1 °C
14 to 131°F
-10 to 55 °C
Relative Humidity
2%RH
0.1 %RH
10 to 90% 25°C noncondensing
Pressure
1.5 hPa|mbar 0.044 inHg 0.022 PSI
0.1 hPa|mbar 0.01 inHg 0.01 PSI
25°C/77°F 700-1100 hPa|mbar 20.67-32.48 inHg 10.15-15.95 PSI
CALCULATED MEASUREMENTS
MEASUREMENT
ACCURACY (+/-)
RESOLUTION
SENSORS EMPLOYED
Density Altitude
226 ft 69 m
1 ft 1 m
Temperature, Relative Humidity Pressure
Dew Point
3.4 °F 1.9 °C 15- 95% RH. Refer to Range for Temperature Sensor
0.1 °F 0.1 °C
Temperature, Relative Humidity
Heat Index
7.1°F 4.0°C
0.1 °F 0.1 °C
Temperature, Relative Humidity
THI (NRC)
1.5 °F 0.8 °C
0.1 °F 0.1 °C
Temperature, Relative Humidity
THI (Yousef)
2.3 °F 1.3 °C
0.1 °F 0.1 °C
Temperature, Relative Humidity
Wet Bulb Temperature – Psychrometric
3.2 °F 1.8 °C
0.1 °F 0.1 °C
Temperature, Relative Humidity Pressure
ADDITIONAL PRODUCT INFO
Response Time & Display Update
Display updates every 1 second. After exposure to large environmental changes, all sensors require an equilibration period to reach stated accuracy. Measurements employing RH may require longer periods particularly after prolonged exposure to very high or very low humidity. WBGT requires about 8 minutes to reach 95% accuracy and about 15 minutes to reach 99% accuracy after exposure to large environmental changes.
Data Storage
Logged history stored for every measured value. Auto-store interval settable from 2 seconds to 12 hours*, overwrite on or off. D1: >13,000 data points, D2: >7,000 data points, D3: >6,000 data points.
Bluetooth® Data Connect Option
Wireless range up to 100ft|30m. Compatible with Kestrel LiNK app for iOS (model 4s and later) and select Android products (Android 4.3 and higher) (See website for complete list of compatible 3rd party apps).
Certifications
CE certified, RoHS, FCC, IC tested and WEEE compliant. Individually tested to NIST-traceable standards.
Origin
Ea Designed and manufactured in the USA from US and imported components. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B.sy
Battery
User-replaceable CR2032 (included).
Shock Resistance
MIL-STD-810g, Transit Shock, Method 516.6 Procedure IV; unit only; impact may damage replaceable impeller.
Sealing
Waterproof (IP67 and NEMA-6)
Battery Operational Temperature Limits
0° F to 140 ° F | -18 °C to 60°C Measurements may be taken beyond the limits of the operational temperature range of batteries by maintaining the unit within the operational range and then exposing it to the more extreme environment for the minimum time necessary to take reading.
Storage Temperature
-22.0 °F to 140.0 °F | -30.0 °C to 60.0 °C.
Size & Weight
2.4 x 1.8 x 0.9 in | 6 x 4.5 x 2.3 cm 1.2oz | 34g (Lithium battery included)