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With our grain management services, you can make sure your bins are running at their peak efficiency and protecting your grain from the elements.

Up To 30' Diameter Bins With 1 Fan (S230831)

Perfect for monitoring grain temperature and moisture in bins 12' to 30′ in diameter with one fan.


This package includes:

  • (1) S2 Control Box
  • (1) S2 OSPL Sensor
  • (1) S2 Headspace Sensor

Control Box Features

The Control Box is a powerful, advanced control unit that allows you to monitor and control your grain temperature and moisture levels. It is designed to mount on any suitable wall or stand. The control box is connected to a computer with wifi, providing easy access to data and real-time monitoring.

OS/PL Sensor Features

The OS/PL Sensor is designed to monitor and measure the grain temperature and moisture levels in your bin. This sensor is reliable and accurate, providing precision readings of your grain’s moisture and temperature levels. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin.

Headspace Sensor Features

The  Headspace Sensor is used for monitoring grain temperature and moisture levels in bins. This sensor is reliable and accurate, providing precise readings of your grain’s moisture and temperature levels. It can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

$700.14

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Guardian GMS Up To 30' Diameter Bins With 2 Fans

Up To 30' Diameter Bins With 2 Fans (S230832)

Perfect for monitoring grain temperature and moisture in bins 12' to 30' in diameter with two fans.


This package includes:

  • (2) S2 Control Box
  • (1) S2 OSPL Sensor
  • (1) S2 Headspace Sensor

Control Box Features

The Control Box is a powerful, advanced control unit that allows you to monitor and control your grain temperature and moisture levels. It is designed to mount on any suitable wall or stand. The control box is connected to a computer with wifi, providing easy access to data and real-time monitoring.

OS/PL Sensor Features

The OS/PL Sensor is designed to monitor and measure the grain temperature and moisture levels in your bin. This sensor is reliable and accurate, providing precision readings of your grain’s moisture and temperature levels. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin.

Headspace Sensor Features

The  Headspace Sensor is used for monitoring grain temperature and moisture levels in bins. This sensor is reliable and accurate, providing precise readings of your grain’s moisture and temperature levels. It can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

$918.33

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Guardian GMS 31' To 48' Diameter Bins With 1 Fan

31' To 48' Diameter Bins With 1 Fan (S230833)

Perfect for monitoring grain temperature and moisture in bins 31' to 48′ in diameter with one fan.


This package includes:

  • (1) S2 Control Box
  • (1) S2 OSPL Sensor
  • (2) S2 Headspace Sensor

Control Box Features

The Control Box is a powerful, advanced control unit that allows you to monitor and control your grain temperature and moisture levels. It is designed to mount on any suitable wall or stand. The control box is connected to a computer with wifi, providing easy access to data and real-time monitoring.

OS/PL Sensor Features

The OS/PL Sensor is designed to monitor and measure the grain temperature and moisture levels in your bin. This sensor is reliable and accurate, providing precision readings of your grain’s moisture and temperature levels. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin.

Headspace Sensor Features

The  Headspace Sensor is used for monitoring grain temperature and moisture levels in bins. This sensor is reliable and accurate, providing precise readings of your grain’s moisture and temperature levels. It can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

$924.66

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Guardian GMS 31' To 48' Diameter Bins With 2 Fans

31' To 48' Diameter Bins With 2 Fans (S230834)

Perfect for monitoring grain temperature and moisture in bins 31′ to 48' in diameter with two fans.


This package includes:

  • (2) S2 Control Box
  • (1) S2 OSPL Sensor
  • (2) S2 Headspace Sensor

Control Box Features

The Control Box is a powerful, advanced control unit that allows you to monitor and control your grain temperature and moisture levels. It is designed to mount on any suitable wall or stand. The control box is connected to a computer with wifi, providing easy access to data and real-time monitoring.

OS/PL Sensor Features

The OS/PL Sensor is designed to monitor and measure the grain temperature and moisture levels in your bin. This sensor is reliable and accurate, providing precision readings of your grain’s moisture and temperature levels. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin.

Headspace Sensor Features

The  Headspace Sensor is used for monitoring grain temperature and moisture levels in bins. This sensor is reliable and accurate, providing precise readings of your grain’s moisture and temperature levels. It can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

$1,142.86

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49' To 66' Diameter Bins With 1 Fan (S230835)

Perfect for monitoring grain temperature and moisture in bins 49' to 66′ in diameter with one fan.


This package includes:

  • (1) S2 Control Box
  • (1) S2 OSPL Sensor
  • (3) S2 Headspace Sensor

Control Box Features

The Control Box is a powerful, advanced control unit that allows you to monitor and control your grain temperature and moisture levels. It is designed to mount on any suitable wall or stand. The control box is connected to a computer with wifi, providing easy access to data and real-time monitoring.

OS/PL Sensor Features

The OS/PL Sensor is designed to monitor and measure the grain temperature and moisture levels in your bin. This sensor is reliable and accurate, providing precision readings of your grain’s moisture and temperature levels. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin.

Headspace Sensor Features

The  Headspace Sensor is used for monitoring grain temperature and moisture levels in bins. This sensor is reliable and accurate, providing precise readings of your grain’s moisture and temperature levels. It can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

$1,149.19

Buy Now From Our Online Store

Guardian GMS 49' To 66' Diameter Bins With 2 Fans

49' To 66' Diameter Bins With 1 Fan (S230836)

Perfect for monitoring grain temperature and moisture in bins 49′ to 66' in diameter with two fans.


This package includes:

  • (2) S2 Control Box
  • (1) S2 OSPL Sensor
  • (3) S2 Headspace Sensor

Control Box Features

The Control Box is a powerful, advanced control unit that allows you to monitor and control your grain temperature and moisture levels. It is designed to mount on any suitable wall or stand. The control box is connected to a computer with wifi, providing easy access to data and real-time monitoring.

OS/PL Sensor Features

The OS/PL Sensor is designed to monitor and measure the grain temperature and moisture levels in your bin. This sensor is reliable and accurate, providing precision readings of your grain’s moisture and temperature levels. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin.

Headspace Sensor Features

The  Headspace Sensor is used for monitoring grain temperature and moisture levels in bins. This sensor is reliable and accurate, providing precise readings of your grain’s moisture and temperature levels. It can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

$1,367.38

Buy Now From Our Online Store

Guardian GMS
Headspace Sensor (S230839)

The S2 Headspace Sensor is the ultimate air temperature and humidity sensor that provides real-time data from your grain bin! This innovative sensor is perfect for keeping an eye on your grain and ensuring its quality. The S2 Headspace Sensor gives you the power to monitor grain moisture and temperature levels, and detect potential problems before they happen. With its advanced technology, you will be notified of any changes in air temperature or humidity so that you can take action quickly. The Guardian GMS Headspace Sensor can be easily mounted in any grain bin and is powered by a 3-volt battery power supply.

  • More Information

    This sensor is ideal for any grain storage facility, whether you are a farmer, miller, elevator, or other grain storage operation. It is designed to mount easily onto your bin and can be connected wirelessly to other systems. The data collected from the sensor is stored securely and can be accessed from a computer, smartphone, or tablet.


    The S2 Headspace Sensor is also equipped with numerous features, including a built-in temperature and humidity sensor that can measure grain moisture and temperature levels. With this data, you will be able to make informed decisions on the state of your grain and take the necessary steps to keep it in top condition. The sensor also includes alarms that alert you when there are potentially dangerous levels of moisture or temperature.


    With the S2 Headspace Sensor, you can keep your grain in perfect condition and avoid costly problems. This revolutionary device can detect changes in air temperature and humidity before any damage is done, and keep your grain bin safe and secure. Keep an eye on your grain with the S2 Headspace Sensor and always get the most accurate data from your grain bin.

$224.53

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Guardian GMS
Control Box (S230837)

The S2 Control Box is perfect for farming and agricultural use! This WiFi operated Relay Switch gives you the convenience of remote control over grain bin fans, augers, livestock fans, and more. It is designed to mount on any suitable wall or stand. The Guardian GMS Control Box is easy to set up and use – simply enter in the required parameters and then you can sit back and relax while this control box does the work for you. Enjoy the convenience of controlling your agricultural equipment remotely with the S2-Control Box!

  • More Information

    This unit comes with a large color display for easy viewing and a rotary switch for easy identification of the parameters. It also includes a temperature sensor so you can monitor the temperature of the environment remotely. It is also equipped with a built-in siren to alert you of any potential danger.


    The S2 Control Box is designed for outdoor applications and is waterproof, dustproof, and resistant to shock and vibration. All of the components are well-constructed, making this device one of the most reliable and durable on the market.


    This product is a must-have for anyone looking to remotely control grain bin fans, augers, livestock fans, and any other devices that require a WiFi operated relay switch. With its user-friendly interface, robust construction, and reliable performance, the S2 Control Box is the perfect solution for anyone with a need to control their connected devices.

$218.20

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Guardian GMS
OS/PL Sensor (S230838)

The S2 OS/PL Sensor is the perfect tool for monitoring outside air temperature and humidity levels in grain bins. The OS/PL Sensor is designed to help you easily and accurately control grain moisture levels, allowing you to make the best market decisions. It is powered by a 3-volt battery power supply and can be easily mounted in any grain bin. Featuring easy installation and simple operation, this reliable and accurate sensor is the perfect choice for any farmer looking for better grain bin management.

$257.41

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