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Monnit ALTA
Monnit
Other Wireless Platforms
Wifi
Bluetooth
Wireless Range Comparison
by
HUMIDITY
The Leading Enterprise Internet of Things Solution
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 Notication 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.
Notications can be set up through the online system
to alert the user when dened thresholds have been
met or exceeded.
Features of Monnit ALTA Sensors
• Wireless range of 1,000+ feet through 12-14 walls *
• Frequency Hopping Spread Spectrum (FHSS)
• Improved interference immunity
• Improved power management for longer battery life **
(10+ years on AA batteries)
• Encrypt-RF™ Security (Dife-Hellman Key Exchange
+ AES-128 CBC for sensor data messages)
• Onboard data memory / storage
(up to 512 readings per sensor)
- 10 min heartbeats = 3.5 days
- 2 hour heartbeats = 42 days
• Over-the-air updates (future proof)
• Free iMonnit basic online wireless sensor monitoring
and notication system to congure sensors, view
data and set alerts via SMS text and email.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting
frequency and other variables. Other power options
are also available.
Example Interfacing
• Greenhouse humidity monitoring
• Agriculture environmental monitoring
• Art gallery and museum environmental monitoring
• Humidor monitoring
• General weather and environmental monitoring
• And many more...
Wireless Range Comparison
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1.125 in
Pinch and Pull
To Change Battery
CR2032 BATTERY
(28.575 mm)
2.0 in
(50.8 mm)
0.875 in
(22.225 mm)
ALTA Commercial Coin Cell Wireless Humidity Sensor - Technical Specications
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 ± 3% under normal conditions (10% - 90% RH) ***
RH Operating Range 0 – 100% RH ***
RH Response Time 8 sec (tau 63%) ***
Integrated Memory Up to 512 sensor messages
Wireless Range 1,000+ ft. non-line-of-sight
Security Encrypt-RF™ (256-bit key exchange and AES-128 CTR)
Weight 0.7 Ounces
Certications 900 MHz product; FCC ID: ZTL- G2SC1 and IC: 9794A-
Industry
Canada
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.
Hardware cannot withstand negative voltage. Please take care when connecting a power device.
*
At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory.
**
View charts on last page for more information.
***
PinchPower™ Enclosures
_
CR2032 BATTERY
+
Pinch
(press in on the sides)
(sensor away from base)
Pull
CR2032 BATTERY
Press
(sensor back into base)
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2.470
2.470
4.375
3.295
1. 111
1. 111
ALTA Commercial AA Wireless Humidity Sensor - Technical Specications
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 ± 3% under normal conditions (10% - 90% RH) ***
RH Operating Range 0 – 100% RH ***
RH Response Time 8 sec (tau 63%) ***
Integrated Memory Up to 512 sensor messages
Wireless Range 1,000+ ft. non-line-of-sight
Security Encrypt-RF™ (256-bit key exchange and AES-128 CTR)
Weight 3.7 Ounces
Certications 900 MHz product; FCC ID: ZTL- G2SC1 and IC: 9794A-
Industry
Canada
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.
Hardware cannot withstand negative voltage. Please take care when connecting a power device.
*
At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory.
**
View charts on last page for more information.
***
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 un-interupted 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.
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Industrial
Wireless
Sensor
2.316 in
(58.84 mm)
Height:
3.701 in
(94.0 mm)
1.378 in
(35.0 mm)
ALTA Industrial Wireless Humidity Sensor - Technical Specications
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°C to +80°C (-40°F to +176°F)
Capacity: 1800 mAh
Optional Solar Feature Solar Panel: 5VDC / 30mA (53mm x 30mm)
Charging Temperature Range: 0°C to 45°C (32°F to 113°F)
Max Temperature Range: -20°C to 60°C (-4°F to 140°F)
Included Rechargeable Battery: 600 mAh / >2000 Charge Cycles (80% of initial capacity)
Accuracy ± 3% under normal conditions (10% - 90% RH) ***
RH Operating Range 0 – 100% RH ***
RH Response Time 8 sec (tau 63%) ***
Integrated Memory Up to 512 sensor messages
Wireless Range 1,000+ 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 specications (File E194432)
Certications 900 MHz product; FCC ID: ZTL- G2SC1 and IC: 9794A-
Industry
Canada
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.
Hardware cannot withstand negative voltage. Please take care when connecting a power device.
*
At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory.
**
View charts on last page for more information.
***
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maximum accuracy
Δ RH (%RH)
Relative Humidity (%)
± 10
± 8
± 6
± 4
± 2
± 0
0 10 20 30 40 50 60 70 80 90 100
Figure 1. Typical and maximal tolerance at 25°C.
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100 120
Figure 4. Operating Conditions
Normal
Range
maximum accuracy
typical accuracy
Relative Humidity (%RH)
Max.
Range
Temperature (°C)
Commercial Grade Sensors:
Δ T (°C)
± 2.0
± 1.5
± 1.0
± 0.5
± 0.0
-40 -20 0 20 40 60 80 100 120
Figure 2. Maximal tolerance for temperature sensor in °C.
typical accuracy
Temperature (°C)
±3 ±2.5 ±2.5 ±2.5 ±2.5 ±2.5 ±3 ±3.5 ±3.5
100
90
±3 ±2.5 ±2 ±2 ±2 ±2 ±2.5 ±3 ±3.5
80
±2.5 ±2 ±1.8 ±1.8 ±1.8 ±2 ±2 ±2.5 ±3
70
±2.5 ±2 ±1.8 ±1.8 ±1.8 ±1.8 ±2 ±2 ±2.5
60
±2 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±2 ±2
50
±2 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±2
40
±2 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8
30
±2 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8
20
±2 ±2 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8 ±1.8
Relative Humidity (%RH)
10
±2.5 ±2.5 ±2 ±2 ±2 ±2 ±2 ±2 ±2
0
±3 ±3 ±2.5 ±2.5 ±2.5 ±2.5 ±2.5 ±2.5 ±2.5
0 10 20 30 40 50 60 70 80
Figure 3. Typical accuracy of relative humidity
measurements given in %RH for temperatures
between 0 – 80°C.
Temperature (°C)
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 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 burn-out.
• Corrosive gas or deoxidizing gas - chlorine gas, hydrogen sulde gas, ammonia gas, sulfuric acid gas, nitric oxides
gas, etc.)
• Volatile or ammable gas
• Dusty conditions
• Under low or high pressure
• 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 product within the specied 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
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.
Monnit Corporation
3400 South West Temple
Salt Lake City, UT 84115
801-561-5555
www.monnit.com
Monnit, iMonnit, ALTA, PinchPower, Encrypt-RF and all other trademarks are property of Monnit, Corp.
© 2018 Monnit Corp. All Rights Reserved.
ADS-A0016-1E (2/18)
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