Device layout

Start and Stop buttons

– START BUTTON

– STOP BUTTON

There are two buttons on the device located under the display. The device only acknowledges a button press after you hold the button for 5-8 seconds. This delay is to prevent accidental button pressing during a shipment. Please note that if you hold the button for longer than 12 seconds, the button press is invalid.

To start or stop a shipment using the buttons, follow these steps

1️⃣ Press and hold the START BUTTON / STOP BUTTON for 5-8 seconds to activate/deactivate the device.

2️⃣ The SHIPMENT LED lights up when the device registers the button press as valid and remains on for 3 seconds. The lit-up led light means that you can release the button.

When you press a button, the device wakes up. It attempts to connect to the Controlant cloud-enabled Supply Chain Monitoring (SCM) platform. You can only trigger a "button press" wake-up once every 30 minutes.

LED indicators

– SHIPMENT LED

– ALARM LED

The Saga logger has two LED indicators next to the display on the right. The behavior of the SHIPMENT LED and the ALARM LED depends on the SHIPMENT STATUS. These LEDs react to a press of the START BUTTON or STOP BUTTON.

Display

The Saga logger has an E-Ink display that updates regularly to indicate the device status. Therefore, the display does not show real-time information; instead, it receives information during each update.

The device does not require battery power to display the data, only when updating the displayed information. It can display temperature in Celsius (°C) or Fahrenheit (°F) depending on the configuration.

Display details

Display sections

The display area has five sections. See the image below.

Display functionality

The following events trigger the display to be updated

1️⃣ Change in the SHIPMENT STATUS

2️⃣ Change in the LAST CLOUD CONNECTION STATUS

3️⃣ There's a temperature value update every 10 minutes when the device measures the temperature. If there has been a change since the last measurement, the following data on the display updates too:

• Alarm status

• Minimum/Maximum temperature (when the device is in shipping mode)

• Battery percentage

4️⃣ The battery icon updates when the device is plugged in to a charger. A battery symbol with a flash is displayed, no percentage shown.

5️⃣ Once the logger is fully charged — but still plugged in to a charger — a battery symbol with a flash is displayed, accompanied by 100% value.

6️⃣ The battery icon updates when the device is unplugged from a charger. A battery symbol with percentage is shown.

Shipment status

The available modes for the device are the following:

Standby mode

A device that has not received shipment information shows the text FREE at the SHIPMENT STATUS. It also shows the last measured temperature, the remaining battery level, and the CLOUD CONNECTION STATUS.

Paired mode

When a device has received shipment information from the cloud, but starting conditions have not been met, the SHIPMENT STATUS shows the text PAIRED  

Shipping mode

A device in a shipment shows SHIPPING at the SHIPMENT STATUS. The image here displays a device in shipment with an ACTIVE ALARM (indicated with an ALARM ICON 🔔 ). The CLOUD CONNECTION STATUS shows that the last sync/connection was successful. The maximum temperature value is above the latest measured temperature, and the minimum temperature is below. The alarm icon is present depending on the rules of the shipment.

For example: if the rules are that the temperature should not go above 24°C and the max is 24.8°C, then the alarm icon is visible. If there's no such a rule, there's no ALARM ICON either.

Shipping mode - still in ignore-period

When the device receives the shipment information before the end of the ignore-period, the Min and Max values will show -.-°C. After that, it shows the minimum and maximum temperature during the shipment. 

Stopping mode

If the STOP BUTTON is pressed while a device is in a shipment, the text displayed in the SHIPMENT STATUS will change to STOPPING.

Stopped mode

If a shipment is successfully stopped (i.e., all stop conditions are met), the SHIPMENT STATUS will show the text STOPPED until:

• The start of a new shipment, or

• The device is charging, or

• Twenty-four hours have passed.

If conditions for stopping the shipment are not met, the SHIPMENT STATUS shows SHIPPING again.

Cloud connection status

Booting up

The CLOUD CONNECTION STATUS is empty when the device boots up.

Syncing

The CLOUD CONNECTION STATUS shows a SYNCING ICON when connecting to and syncing with the cloud.

Connected to the cloud

If sync to the cloud is successful, the CLOUD CONNECTION STATUS will show a CLOUD ICON WITH A CHECKMARK, indicating a successful cloud connection.

Connection fails, or sync is not completed

If a connection fails or sync is not completed (e.g., due to a bad cellular connection), the CLOUD CONNECTION STATUS will show a CLOUD ICON WITH AN X. The icon stays like this until the device attempts to sync again. Then it shows a SYNCING ICON until it can indicate the actual status of the connection.

Flight mode

Flight mode is automatically activated during flights. When the device is in flight mode, the display indicates to the user that the flight mode is active by showing the FLIGHT ICON in the lower right corner of the display. The display continues to update during flight mode whenever there's a change in the measured temperature, though it doesn't attempt to establish a connection to the cloud to upload data.

"Device needs service" status

At Controlant we actively and routinely monitor the Saga device fleet to optimize performance and identify potential issues. If a device requires service, the display will update to DEVICE NEEDS SERVICE after it has woken up and connected to the Controlant cloud as shown below.

The table below explains further what the device will display after receiving the service message, depending on the shipment status.

Shipment state	SCM logger status	Device shipment status	Display when operational status is not active
Draft	FREE	FREE	Display message: DEVICE NEEDS SERVICE
Ready	IN A SHIPMENT	PAIRED	Normal behavior, showing PAIRED in the Shipment status window.
Shipping	IN A SHIPMENT	SHIPPING	Normal behavior, showing SHIPPING in the Shipment status window.
Delivered	FREE	FREE	After the device is stopped, the shipment is delivered, and the device becomes free. The display will, however, not go immediately to DEVICE NEEDS SERVICE as the device enters a "grace period" when a shipment is delivered, where the display is not updated for 24 hours and shows STOPPED in the Shipment status window. This is intended for the user to have access to the shipment information on the display for a short period after the shipment is delivered. After 24 hours, the display will shift to DEVICE NEEDS SERVICE.
Closed	FREE	FREE	Display message: DEVICE NEEDS SERVICE

Display prioritization while not in a shipment

The DEVICE NEEDS SERVICE display takes precedence over Low power mode, charging, and USB display notifications when not in shipment.

Temperature range

The display is only active when the temperature is between 0°C and 50°C. However, the device continues to function in the operating temperature range even when the display is inactive. The display shows a warning when the temperature is below 0°C or above 50°C. See below.

LED behavior

The following table lists the LED behavior based on button activity, shipment, and alarm status.

Button activity			NO BUTTON
Not in Shipment	SHIPMENT LED ON for 3 seconds	No activity	SHIPMENT LED OFF ALARM LED OFF
Assigned to shipment	SHIPMENT LED ON for 3 seconds	No activity	SHIPMENT LEDBLINKS every 5 seconds after the first successful wake-up after the shipment is created
In shipment, no alarm	SHIPMENT LED ON for 3 seconds	SHIPMENT LED ON for 3 seconds	SHIPMENT LEDBLINKS every 5 seconds
In shipment, active alarm	SHIPMENT LED ON for 3 seconds ALARM LED ON for 3 seconds	SHIPMENT LED ON for 3 seconds ALARM LED ON for 3 seconds	SHIPMENT LEDBLINKS every 5 seconds ALARM LED BLINKS every 5 seconds

The SHIPMENT LED starts blinking as soon as the device receives the shipment information, whether the shipment has started or not.

Temperature alarms during a shipment

When the device is in a shipment with one or more temperature warnings defined, the device can enter an ALARM STATE if the temperature goes outside the specified boundaries and time limit. The alarms that trigger the ALARM STATE depend on the severity settings (low, medium, and high) used to determine whether a manual inspection is required after the shipment is delivered.

Admin users in Account admin can modify this on the SCM platform (SCM Settings → Require manual inspection for shipments with). The default behavior is that the ALARM STATE is activated if the excursion severity is medium or higher.

If an event occurred that triggers the alarm state during the shipment, the ALARM STATE is visible on the device in two places: 

• The ALARM LED blinks. 

• The display shows the ALARM ICON 🔔 .

Light events during a shipment

The Saga logger has a light sensor positioned below the display.

The device measures light intensity every 10 seconds and compares the last measurement value to the current one. It reports a LIGHT EVENT if it reaches a certain threshold in change. Subtle changes in light intensity (e.g., sunrise and sunset), do not trigger an event.

Light events only appear in the SCM system and not on the device itself. A maximum of six events are logged every hour. If more than six events occur per hour, the latest events are discarded until the oldest event is more than 1 hour (60 minutes) old.

In HIBERNATION MODE, the light sensor turns off, and LIGHT EVENTS are not detected.

Wake-up behavior

• A device not in a shipment is considered to be in STANDBY MODE and wakes up every 12 hours. There are exceptions, as detailed below.

  • A device in a DRAFT SHIPMENT behaves as if it is not registered to a shipment because the creation of the shipment has not been finalized.

  • A device in a READY STATE shipment wakes up every 12 hours - except if the start shipping method is GEOFENCE, GEOFENCE OR BUTTON, or SPECIFY TIME. In these cases, the device wakes up according to a wake-up schedule defined for the shipment.

• A device in an active shipment wakes up according to the wake-up schedule defined in the shipment (i.e., 1 hour, 2 hour, 3 hour, 6 hour, or 12 hour intervals).

• A device attempts to wake up immediately and report to the Controlant cloud when an ALARM STATE occurs. After waking up to report the ALARM STATE, the device will return to the configured wake-up schedule.

• The device wakes up every time the buttons are pressed, but no more than once every 30 minutes.

  • After a button has been pressed, the device wakes up every hour for 5 hours. After 5 hours, the device returns to the previous wake-up schedule.

  • If a device is not registered to a shipment or a wake-up schedule determined by the shipment, the device returns to the previous default wake-up schedule.

• A device wakes up when plugged in to be charged. It wakes up when it's fully charged and again when it's removed from the charging station.

• A device in shipment also wakes up when it exits FLIGHT MODE.

A device does not detect that it is registered to a shipment unless it has woken up and reported to the Controlant cloud to receive the shipment message. The device behaves as if it's in STANDBY MODE until it has successfully received the shipment message. 

If the start shipping method is set to SPECIFY TIME and the start time is set to a time in the future, the device uses the updated wake-up interval after the next wake-up, even though the shipment has not started. 

Device not registered to a shipment - Standby mode

A device not registered to a shipment shows:

• The latest temperature measurement of the device.

• The battery level (charging or not charging) and the battery percentage (10-100%)

• Connection status at the last wake-up.

  • If sync to the cloud was successful at the last wake-up, the display shows a CLOUD ICON WITH A CHECKMARK indicating a successful cloud connection.

  • If a connection fails or sync is not completed (e.g., due to a bad cellular connection), the display will show a CLOUD ICON WITH AN X.

  • The CLOUD CONNECTION STATUS is updated at every wake-up. A device in STANDBY MODE wakes up every 12 hours.

Device during a shipment - Shipping mode

The device, during an active shipment, has the following features:

• On the display:

  • SHIPPING is visible on the top left of the display in the SHIPPING STATUS area. It appears after a shipment has been initiated with the START BUTTON or through the SCM platform. SHIPPING is displayed while the device is in shipping mode.

  • According to the severity notification setup on the SCM platform, the ALARM ICON 🔔 appears when an ALARM STATE occurs.

• The SHIPMENT LED blinks every 5 seconds while the shipment is active.

• The ALARM LED blinks every 5 seconds if an ALARM STATE has occurred during an active shipment.

• The SHIPMENT LED turns on for 3 seconds and turns off as soon as the STOP BUTTON has had a valid press.

Battery

Battery type

The Saga logger has a rechargeable 2500mAh NiMH battery, with a lifecycle of at least 300 charge cycles. NiMH batteries are not considered hazardous goods.

Expected battery life

The Saga logger can be expected to function up to 110 days on a single charge while in an active shipment based on the longest wake-up interval of 12 hours.
Note that low temperature and cellular conditions affect battery life along with any additional wake-ups (e.g., button pushes and alarms).

Charging the device

Remaining battery percentage

The BATTERY ICON and the battery percentage next to the symbol show the remaining battery percentage. The black bar size also shrinks as the battery level reduces.

Charging

The device can be charged using one of the following methods:

• A dedicated charging station provided by Controlant, that can fit 5 devices at a time

• A USB charging adapter

• A computer USB port.

For optimal charging and performance, please follow these guidelines:

• Charge each device for 6 hours and until 100% shows on the screen on the right side of the battery with a flash symbol.

• Leaving the device on the charger for an extended period after it's fully charged (>24 hours) is not recommended for maintaining battery health, though it presents no safety hazard.

• The charging area, or charging room, should be well ventilated and at room temperature (15-25°C / 59-77°F). The device is unable to charge if the ambient temperature is below 0°C / 32°F.

• Make sure that the devices are standing upright and are not leaning against each other.

Display behavior while charging

Immediately as the device is plugged in to charge, a USB ICON shows up for a few seconds, briefly replacing the temperature values.

While the device is being charged, the battery icon has a flash symbol. The battery percentage is not displayed while charging.

If the internal temperature of the device reaches 40°C / 104°F the charging process will automatically interrupt until the device cools down again. A crossed-out battery icon appears on the screen, and stays on until charging resumes.

The battery is fully charged when 100% appears on the right side of the battery icon with the flash symbol.

The device wakes up one more time when fully charged, and then the wake-up interval goes back to every 12 hours.

Low power mode

Battery less than 10 percent

When the battery level goes below 10%, the device wakes up every 24 hours, whether in SHIPPING MODE or STANDBY MODE. The device operates in this fashion until the battery level is 5%. The display indicates the low power mode with the following icon and message.

Battery 5 percent or less

The device enters HIBERNATION MODE when the battery level reaches 5% or less. The display continues to show the Low power mode icon and message. Only the most critical functions are maintained in this mode until the battery is fully depleted. Temperature is measured and logged in the memory during HIBERNATION MODE for as long as the battery lasts. Once a device is charged, it wakes up and sends all measurements logged in the memory to the Controlant cloud.

The following functionalities are stopped in HIBERNATION MODE:

• Modem wake-up

• LED lights

• Light sensor

• Accelerometer

• Barometer

• Wake-up and LED behavior due to "button press" are switched off. Button events are still registered to memory.

Storing the device

When the device is not in use, please keep in mind the following optimal storage conditions:

• Ambient temperature between 0°C and 25°C (32°F and 77°F).

• Relative humidity below 80%.

• Good cellular connection. The device always communicates with the Controlant Cloud, even when not in use. Make sure not to store it in metal enclosures, or areas where the connection is poor.

• Be mindful of battery health. Use good inventory practices (i.e., first in, first out) to reduce the time a single device spends in storage. Never store a device with low battery.

Examples

The "Start button" is pressed

Illustration: The START BUTTON is pressed on an idle device.

• After the START BUTTON has been held down for 5–8 seconds, the SHIPMENT LED turns on, indicating that the button has been pressed long enough.

• Suppose the button event triggers a connection to the cloud, then the display updates, showing a SYNCING ICON.

• A sync can take from 30 seconds up to 6 minutes, depending on the connection and the amount of data.

• When the syncing is complete and successful, the CLOUD CONNECTION STATUS updates. In this case, the device received a shipment with BUTTON as a start method, and the SHIPMENT STATUS updates to SHIPPING, indicating that a shipment has started.

The "Start button" is pressed, but no cellular connection

Illustration: The START BUTTON is pressed on an idle device.

• Suppose the device received the shipment information in a previous wake-up and the start method is BUTTON. In this case, the device moves into shipping mode showing SHIPPING in the SHIPPING STATUS, even though a connection to the cloud fails.

• The CLOUD CONNECTION STATUS will show a CLOUD ICON WITH AN X, indicating a failed connection.

The device has received shipment information, but the shipment has not started

Illustration: The START BUTTON is pressed on a device with the "Geofence" start method, but it's still at the origin.

• The device can receive information about a shipment before the starting conditions are met.

• For example, if a device receives shipment information with a "Geofence" start method but the device has not left the shipping origin. 

The "Stop button" is pressed

Illustration: The STOP BUTTON is pressed on a device in active shipment.

• When the STOP BUTTON has been pressed for 5–8 seconds, the SHIPMENT LED lights up for 3 seconds, and the SHIPMENT STATUS goes from SHIPPING to STOPPING.

• If the button event triggers a connection to the cloud, the display shows a SYNCING ICON. After a successful cloud connection, and when all stop conditions have been met, the display shows STOPPED and a Cloud icon with a checkmark.

The "Stop button" is pressed, but no connection to the cloud (Button only)

Illustration: The STOP BUTTON is pressed on a device in active shipment with the BUTTON stop condition.

• The device tries to stop the shipment, and if the button event triggers a connection, syncs with the cloud. 

• As a STOP BUTTON press is the only condition for delivering the shipment, the display shows STOPPED even if a connection to the cloud failed.

The "Stop button" is pressed, but no connection to the cloud (Button and Geofence)

Illustration: The STOP BUTTON is pressed on a device in active shipment with BUTTON AND GEOFENCE stop condition.

• The device tries to stop the shipment, and if the button event triggers a connection, sync with the cloud.

• The sync fails due to a bad connection, and the display shows SHIPPING again and a CLOD ICON WITH AN X, indicating a failed sync.

• Moving from STOPPING to SHIPPING can take 30–300 seconds. The SYNCING ICON will remain in the CLOUD CONNECTION STATUS during the STOPPING process.

• If the device is at the destination and syncs successfully with the cloud within 3 hours from the button press, the shipment will be delivered, and STOPPED will appear on the display.

The "Stop button" is pressed, but the device is not at the destination

Illustration: The STOP BUTTON is pressed on a device in active shipment with BUTTON AND GEOFENCE stop condition.

• The device tries to stop the shipment and sync with the cloud. The sync is completed, but the device has not arrived at its destination, so the display shows SHIPPING again and a CLOUD ICON WITH A CHECKMARK, indicating a successful sync with the cloud at the last wake-up.

Manual shipment delivery

If a device in shipment receives a manual STOP SHIPMENT message, it will update the display after the next successful wake-up to show STOPPED.