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EM21 Environmental Monitor

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The EM21 Wireless Environmental Monitor is a wireless, waterproof, data-logging sensor that monitors temperature and humidity. The EM21 is ideal for ensuring food safety during transportation, monitoring warehouse conditions, and other applications that rely on environmental data to ensure quality and maintain compliance. The EM21 is a part of a complete solution designed to enhance efficiency, safety, customer service, and compliance.

  • Wirelessly monitors temperature and humidity
  • Durable waterproof design with LCD display
  • Class-leading electronics with multi-year battery life with single AA battery
  • Scales from small operations to thousands of assets
  • Easy plug-and-play installation takes 15 minutes
Warranty

All Samsara hardware has a warranty that lasts as long as a valid license for said hardware is maintained. For more information, click here.

Monitor Your Assets

The EM21 Environmental Monitor is a powerful wireless device that can help businesses, warehouses, hospitals, and other organizations maintain optimal temperature and humidity levels. With its precise sensors and durable waterproof design, this monitor is perfect for ensuring food safety during transportation, monitoring warehouse conditions, and maintaining compliance.

The EM21 Environmental Monitor can transmit real-time sensor data to Samsara cellular gateways, allowing operators to see up-to-the-second data over the web and receive alerts when conditions require attention. Plus, its advanced wireless technology and multi-year battery life make it a cost-effective solution that scales from small to large operations.

Contact us today to learn more about how the EM21 Environmental Monitor can benefit your organization and improve your operations.

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High Tech Surveillance with the EM21 Environmental Sensor

The Samsara EM21 Environmental Monitor is a wireless and waterproof data-logging sensor that monitors temperature and humidity. It is designed to be used in various environments where environmental data is critical to ensure quality or maintain compliance.

The device is equipped with precise sensors and an easy-to-install wireless design. Additionally, the EM21 is built to withstand harsh operating conditions and is IP67-rated for protection against water and dust. It is designed to be durable and can withstand impact.

The EM21 has class-leading electronics with multi-year battery life, enabling it to transmit sensor data in real-time to Samsara cellular gateways. When out of range, it logs data to onboard storage and automatically uploads the data the next time it comes near a gateway. The device can run for three years off a single AA battery, despite always-on wireless networking and data-logging.

 

Woman wearing the appropriate protections in food facility looking at beans after reviewing alert from the Samsara EM21 environmental monitor

Simple to Use, Smart, and More: Benefits of the Samsara EM21

The Samsara EM21 Environmental Monitor provides numerous benefits for various industries that require environmental monitoring to ensure quality or maintain compliance.

The device is easy to install and use, making it suitable for small operations that do not require IT or engineering support. Yet it is scalable and has enterprise-grade security, making it a great solution for large-scale operations.

The EM21 has an LCD display that shows temperature and humidity readings, making it easy to read and understand the device’s data. The device’s wireless and waterproof design, along with its multi-year battery life, make it ideal for use in harsh operating conditions.

Overall, the Samsara EM21 is a reliable and cost-effective solution for environmental monitoring needs.

Where to Use the Samsara EM21

The Samsara EM21 Environmental Monitor has several applications in various industries since it is designed to monitor temperature and humidity levels. For example, the EM21 can:

  • Ensure food safety during transportation
  • Monitor warehouse conditions
  • Help pharmaceutical companies ensure that medicines are stored at the correct temperature and humidity to maintain their efficacy
  • Maintain the quality of perishable goods in cold chain logistics, where temperature and humidity control is critical
  • Protect equipment in data centers and other facilities where temperature and humidity
  • Ideal for harsh environments such as refrigerated trailers and food storage facilities subject to moisture and power-washing.

Overall, the Samsara EM21 is a versatile environmental monitor that can be used in various applications to ensure quality or maintain compliance.

Managers walking through facility equipped with the EM21 as part of manufacturer security system

Shop the Samsara EM21 Environmental Monitor

Introducing the Samsara EM21 Environmental Monitor – a wireless, waterproof, and durable sensor that monitors temperature and humidity. Designed to ensure food safety during transportation and monitor warehouse conditions, the EM21 is a cost-effective solution for environmental monitoring needs. With its easy-to-install wireless design and precise sensors, it is suitable for both small and large-scale operations.

EM21 Environmental Monitor Frequently Asked Questions

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What is the EM21 Environmental Monitor?

The EM21 is a wireless, waterproof, data-logging environmental monitor with temperature and humidity sensors. It wirelessly monitors temperature and humidity in real-time, making it ideal for applications that require environmental data to ensure quality or maintain compliance.

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What is the accuracy range of the EM21’s temperature sensor?

The ambient temperature range of the EM21 is -40° to 60° C. The typical accuracy range is ±0.3° C, with a maximum accuracy range of ±0.4° C for temperatures between -10° and 60° C. For temperatures between -40° and -10° C, the typical accuracy range is ±0.7° C, with a maximum accuracy range of ±0.9° C.

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What is the accuracy range of the EM21’s humidity sensor?

The EM21’s relative humidity sensor has a range of 0-95% RH and is factory-calibrated for accuracy.

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Is the EM21 Environmental Monitor waterproof?

Yes, the EM21 Environmental Monitor is waterproof and has an IP67 rating, meaning it is protected against water and dust. It can withstand rain, splashes, and accidental submersion (although it is not intended for prolonged submersion).

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Does the EM21 Environmental Monitor require a license?

Yes, the EM21 requires an EM license, which includes hardware, cloud software, ongoing firmware updates, and support. Volume purchase and multi-year license term discounts are available, so contact Samsara for details.

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What is the wireless connectivity range of the EM21 Environmental Monitor?

The EM21 wirelessly connects to Samsara cellular gateways and has a typical range of 100′ (line of sight). However, the actual range depends on RF interference and physical obstructions.

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Can the EM21 Environmental Monitor be used for large-scale operations?

Yes, the EM21 can be used for small and large-scale operations. It is compact, affordable, and easy to use, making it ideal for small operations without IT or engineering complexity. But Samsara’s scalable cloud infrastructure and enterprise-grade security make the EM21 an ideal solution for monitoring large-scale operations as well.

Advanced Monitoring with the EM21

The Samsara EM21 Environmental Monitor is a reliable and cost-effective solution for monitoring temperature and humidity levels. Its wireless and waterproof design makes it suitable for various applications. The EM21’s long battery life, real-time data transmission, and multi-year data logging capabilities, along with its ease of use and scalability, make it a preferred choice for businesses of all sizes.

By monitoring environmental conditions, businesses can ensure quality, maintain compliance, and optimize operations. Choose the Samsara EM21 to bring visibility to your environmental monitoring needs. Contact us to learn more!

Product Specifications

Dimensions

  • 6.3 x 6.3 x 2.25 cm (2.48 x 2.48 x .89 in)

Weight

  • 75.6 g

Operating Temperature

  • -40° to 60°C

Battery

  • 3+ year battery life, user-replaceable AA battery

Probe (EM22)

  • Stainless steel (5.0 x .33 cm), 28AWG hermetically-sealed PFA jacket (sterilizable). Total probe and wire length = 120 cm

Ingress Protection

  • IP67 rated waterproof and dustproof per IEC standard 60529; designed for splash, spray, and dust (body no intended for prolonged submersion)

Data Logging Capacity

  • When vehicle is on, typical power draw is 1W (3 months)

Data Upload

  • Automatic (zero touch) wireless data upload via Samsara gateway

Included Sensors

  • Temperature (Built-In):
    Range: -40° to 60° C (limited by operating range)
    Accuracy: -10° to 60° C, Typical: ±0.3°, C Max: ±0.4° C -40° to -10° C, Typical: ±0.7°, C Max: ±0.9° C

Temperature (External Probe – EM22)

  • Range: -55° to 100° C
  • Accuracy: -55° to 100° C Typical: ±1.0° C
  • Time Constant: 5.0s (oil bath)

Humidity

  • Range: 0-95% RH
  • Accuracy: 0 to 80% RH Typical: ±2.0% Max: ±3.0% 80 to 90% RH Typical: ±2.5% Max: ±3.8% 90 to 95% RH Typical: ±3.0% Max: ±4.5%
  • Time Constant: 18s (1 m/s airflow)

Real-Time

  •  Samples every 4 seconds, transmits new data to the cloud in real-time

Auto-Discovery

  • Automatically detects and connects to any sensor associated with same account

Wireless Range

  • 100 ft / 30 m (line of site). Actual range depends on RF interference, building materials, and physical obstacles

Radio Frequency

  •  2.4 Ghz, proprietary low-power sensor data protocol

Visibility and Management

  •  Real-time visibility, SMS and email alerts, and historical reports via Samsara Cloud dashboard for web and mobile devices

All-Inclusive License

  • Requires EM license, which includes maintenance and support, dashboard access, sensor data storage, and feature updates

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