Wireless Humidity Sensors Datasheet by Monnit Corporation

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Wireless Humidity Sensors
General Description
The ALTA Wireless Humidity (RH) Sensor allows you to
accurately monitor the relative humidity of the air within
a room or enclosure.
Measures relative humidity, temperature and dew
point with high accuracy
Principle of Operation
The ALTA Wireless Humidity (RH) Sensor measures the
relative humidity at the device. The sensor returns RH
and temperature values to the iMonnit Online Sensor
Monitoring and Notification System. The system
calculates dew point from the data and stores all three
data points in the online system where the data can be
reviewed and exported as a data sheet or graph.
Notifications can be set up through the online system
to alert the user when defined thresholds have been
met or exceeded.
Example Interfacing
Greenhouse humidity monitoring
Agriculture environmental monitoring
Art gallery and museum environmental monitoring
Humidor monitoring
General weather and environmental monitoring
Many additional applications
The Leading Enterprise Internet of Things Solution
PAGE 1
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Features of Monnit ALTA Sensors
Wireless range of 1,200+ feet through 12+ walls *
Frequency-Hopping Spread Spectrum (FHSS)
Improved interference immunity
Improved power management for longer battery life **
(12+ years on AA batteries)
Encrypt-RF® Security (Diffie-Hellman Key Exchange
+ AES-128 CBC for sensor data messages)
Onboard data memory stores up to 512 readings
per sensor:
- 10-minute heartbeats = 3.5 days
- 2-hour heartbeats = 42 days
Over-the-air updates (future proof)
Free iMonnit basic online wireless sensor monitoring
and notification system to configure sensors, view
data and set alerts via SMS text and email
Wireless Range Comparison
Monnit ALTA
Monnit
Other Wireless Platforms
Wifi
Bluetooth
Wireless Range Comparison
*Actual range may vary depending on environment.
** Battery life is determined by sensor reporting
frequency and other variables. Other power options
are also available.
F© I*I 192%?
1.125 in
(28.575 mm)
2.0 in
(50.8 mm)
0.875 in
(22.225 mm)
Pinch and Pull
To Change Battery
CR2032 BATTERY
ALTA Commercial Coin Cell Wireless Humidity Sensor | Technical Specifications
Supply voltage 2.0–3.8 VDC *
Current consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle),
2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA
(radio TX mode)
Operating temperature range (board circuitry and coin cell) -7°C to +55°C (20°F to +131°F)
Optimal battery temperature range (coin cell) +10°C to +50°C (+50°F to +122°F)
Accuracy ± 2% under normal conditions (0%–80% RH) **
RH operating range 0–100% RH **
RH response time 8 sec (tau 63%) **
Integrated memory Up to 512 sensor messages
Wireless range 1,200+ ft non-line-of-sight
Security Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight 0.7 ounces
Certifications 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-
G2SC1. 868 and 433 MHz product tested and found to
comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2
V3.1.1 (2017-02) and EN 60950
PinchPower™ Enclosures
Pull
(sensor away from base)
Pinch
(press in on the sides)
Press
(sensor back into base)
CR2032 BATTERY
+
_
CR2032 BATTERY
PAGE 2
*Hardware cannot withstand negative voltage. Please take care when connecting a power device.
** View charts on last page for more information.
Industry
Canada
F© I*I 192%“;
ALTA Commercial AA Wireless Humidity Sensor | Technical Specifications
Supply voltage 2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle),
2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA
(radio TX mode)
Operating temperature range (board circuitry and batteries) -18°C to 50°C (0°F to 122°F) using alkaline
-40°C to 80°C (-40°F to 176°F) using lithium
Optimal battery temperature range (AA) +10°C to +45°C (+50°F to +113°F)
Accuracy ± 2% under normal conditions (0%–80% RH) **
RH operating range 0–100% RH **
RH response time 8 sec (tau 63%) **
Integrated memory Up to 512 sensor messages
Wireless range 1,200+ ft non-line-of-sight
Security Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight 3.7 ounces
Certifications 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-
G2SC1. 868 and 433 MHz product tested and found to
comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2
V3.1.1 (2017-02) and EN 60950
1.111
2.470
2.470
1.111
4.375
3.295
Power Options
The standard version of this sensor is powered by two replaceable 1.5 V AA sized batteries (included with purchase).
This sensor is also available with a line power option. The line powered version of this sensor has a barrel power
connector allowing it to be powered by a standard 3.0–3.6 V power supply. The line powered version also uses two
standard 1.5 V AA batteries as backup for uninterrupted operation in the event of line power outage.
Power options must be selected at time of purchase, as the internal hardware of the sensor must be changed to support
the selected power requirements.
PAGE 3
*Hardware cannot withstand negative voltage. Please take care when connecting a power device.
** View charts on last page for more information.
Industry
Canada
ALTA Industrial Wireless Humidity Sensor | Technical Specifications
Supply voltage 2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle),
2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio
TX mode)
Operating temperature range (board circuitry and battery) -40°C to +80°C (-40°F to +176°F)
Included battery Max temperature range -40° to +80°C (-40° to +176°F)
Capacity 1500 mAh
Optional solar feature Solar panel 5VDC/30mA (53mm x 30mm)
Charging temperature range 0° to 45°C (32° to 113°F)
Max temperature range -20° to 60°C (-4° to 140°F)
Included rechargeable battery 600 mAh/>2000 charge cycles (80% of initial capacity)
Solar efficiency Optimized for high and low-light operation **
Charging efficiency 40% ****
Luminous sustainability Minimum of 250 LUX ****
Accuracy ± 2% under normal conditions (0%–80% RH) ***
RH operating range 0–100% RH ***
RH response time 8 sec (tau 63%) ***
Integrated memory Up to 512 sensor messages
Wireless range 1,200+ ft non-line-of-sight
Security Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight 4.7 ounces
Enclosure rating NEMA 1, 2, 4, 4x, 12 and 13 rated, sealed and weather proof
UL rating UL Listed to UL508-4x specifications (File E194432)
Certifications 900 MHz product; FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1.
868 and 433 MHz product tested and found to comply with: EN
300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02)
and EN 60950
3.701 in
(94.0 mm)
Height:
1.378 in
(35.0 mm)
2.316 in
(58.84 mm)
Industrial
Wireless
Sensor
PAGE 4
*Hardware cannot withstand negative voltage. Please take care when connecting a power device.
**
***
Light present 25% of day yields 125% of operating power to support 10-minute heartbeats.
View charts on last page for more information.
Industry
Canada
**** Solar feature’s energy harvesting circuitry works indoors with low light.
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Monnit Corporation
3400 South West Temple
Salt Lake City, UT 84115
801-561-5555
www.monnit.com
For more information about our products or to place an order, please contact
our sales department at 801-561-5555.
Visit us on the web at www.monnit.com.
Operating Range
The sensor works stable within recommended Normal Range—see Figure 4. Long-term exposure to conditions outside Normal
Range, especially at humidity >80%RH, may temporarily offset the RH signal (+3%RH after 60h). After return into the Normal
Range it will slowly return towards calibration state by itself. Prolonged exposure to extreme conditions may accelerate aging.
Monnit, iMonnit, ALTA, PinchPower, Encrypt-RF and all other trademarks are property of Monnit, Corp.
© 2018 Monnit Corp. All Rights Reserved.
Commercial Grade Sensors
Monnit commercial grade sensors are designed for applications in ordinary environments (normal room temperature,
humidity and atmospheric pressure). Do not use these sensors under the following conditions as these factors can
deteriorate the product characteristics and cause failures and burnout.
Corrosive gas or deoxidizing gas: chlorine gas, hydrogen sulfide gas, ammonia gas, sulfuric acid gas, nitric oxides
gas, etc.
Volatile or flammable gas
Dusty conditions
Low-pressure or high-pressure environments
Wet or excessively humid locations
Places with salt water, oils chemical liquids or organic solvents
Where there are excessively strong vibrations
Other places where similar hazardous conditions exist
Use these products within the specified temperature range. Higher temperature may cause deterioration of the
characteristics or the material quality.
Industrial Grade Sensors | Type 1, 2, 4, 4X, 12 and 13 NEMA Rated Enclosure
Monnit’s Industrial sensors are enclosed in reliable, weatherproof NEMA-rated enclosures. Our NEMA-rated enclosures
are constructed for both indoor or outdoor use and protect the sensor circuitry against the ingress of solid foreign objects
like dust as well as the damaging effects of water (rain, sleet, snow, splashing water, and hose-directed water).
Safe from falling dirt
Protects against wind-blown dust
Protects against rain, sleet, snow, splashing water, and hose-directed water
Increased level of corrosion resistance
Will remain undamaged by ice formation on the enclosure

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