smaXtec system SX.1

The smaXtec Classic Bolus

Here you’ll learn how to initialise and administer the smaXtec Classic Bolus correctly.

On this site you find the following content:

  • Video guide for bolus activation
  • Quickstartguide
  • Step-by-step guide for bolus activation
  • Video guide and tips for bolus administration


The smaXtec Classic Bolus is exclusively designed for cattle. Under no circumstances may it be used for any other animals or humans. The minimum body weight of cows receiving a bolus is 450 kg when administered by trained staff (approximately 18 months for Holstein cows) and 300 kg when administered under veterinary supervision. If in any doubt, please consult your vet.

Video guide: Bolus activation

In this video you can see the steps necessary to activate the smaXtec Classic Bolus SX.1. You can also scroll down and watch the illustrated step-by-step instructions.
Important  note

Make absolutely sure that the bolus has been activated correctly. If activation was successful, the LED will blink to indicate that the bolus is ready for use. Under no circumstances should you administer the bolus if the blinking pattern is incorrect, as it will not measure any data. Once boluses are administered, they cannot be withdrawn and activated.

After insertion, smaXtec boluses need to settle on the floor of the reticulum as quickly as possible. For this reason, it is important to ensure that the fibrous material in the rumen is not too dense. Therefore, cows should not eat right before bolus application.
Step 01 / 02

Activating the   Classic Bolus SX.1

First, remove the label from the bottom of the smaXtec Classic Bolus. Next, activate the bolus using the magnet delivered with the smaXtec Base Station. Hold the magnet onto the marked point of the bolus. If the initialisation process starts, the LED begins flashing rapidly (every 0.5 seconds for a duration of 5 seconds).

If initalisation has been successfully completed, the LED lights up every two seconds for a period of 30 minutes.

If initialisation fails, the LED flashes very rapidly (every 100 milliseconds) for a period of 30 minutes. If this is the case, please contact customer support and do not administer the bolus.

Step 02 / 02

Bolus assignment and   administration

After successful initialisation, smaXtec boli can be administered to animals using the smaXtec bolus applicator. Note the animal identification next to the serial number on the provided list or assign the bolus directly to an animal in the smaXtec App or Messenger. You can either create new animals or select from existing animals in the system (e.g. uploaded via animal importer).

Afterwards, you can administer the bolus. Ensure that only successfully initialised boluses are administered. After at least 30 minutes from bolus administration, you can access the first cow data in the smaXtec software.

Overview of the different LED displays

successfully activated
flashes briefly
every 0.5 seconds
successfully initialised
Flashes every two seconds
for 30 minutes:
Error dring
Flashes very rapidly (every 100ms)
for 30 minutes:

What should you do in case of an error during initialisation?


What should you do in case of an error during initialisation?

Contact the smaXtec customer support. Do not administer the bolus!

Safe installation with the Quickstartguide

Use the quickstartguide provided or download it here. Follow the steps described and make sure that you complete them correctly.
Download Quickstart­guide

Video tutorial: bolus administration

In this video you will see what points to consider when administering smaXtec Boluses. You need:
  • a smaXtec bolus applicator
  • a marker or spray
Important note

For biosafety reasons we do not recommend to re-use boluses. smaXtec rumen boluses are not designed for reuse. If the bolus is re-administered, we cannot guarantee the correct measurement due to the mechanical influences and the change of medium (rumen/air/rumen). This also applies to rumen-fistulated animals.

Details administration process


Details administration process

First insert the smaXtec Classic Bolus into the bolus applicator, with the sensor shaft (the bottom end) at the head. Push the smaXtec Classic Bolus into the applicator in such a way that the sensor shaft comes to rest at the far end of the applicator. Please ensure that the push rod of the applicator is kept flat – the push rod should not press directly on the sensor shaft. This ensures that the smaXtec Classic Bolus is positioned sensor shaft first in the cow’s stomach. With the cow’s head and neck angled in an extended and straightened position you can now administer the smaXtec Classic Bolus. The front end of the applicator must reach beyond the base of the tongue before the smaXtec Classic Bolus is released. Please ensure that the cow does not eat anything for at least two hours prior to administration of the smaXtec Classic Bolus. It is therefore preferable to administer the smaXtec Classic Bolus in the morning before the first feed.
We do not recommend reusing smaXtec Classic Bolus in other animal for reasons of biosecurity. Furthermore, the boluses are not designed for repeated use. If you administer a bolus to another animal we cannot assume any guarantee for correct measurement because of the mechanical influences and change of medium (rumen/air/rumen). This is also applies for cows with rumen fistulas.

How soon after initialisation does the smaXtec Classic Bolus have to be administered to the animal?

The smaXtec Classic Bolus should be administered within the next few hours.
The smaXtec Classic Bolus SX.1 can save data in its internal memory for 50 days. As soon as measured data is read out by one of the read-out devices (smaXtec Base Station or Repeater), the internal storage is available again.
The battery lifetime of the smaXtec Classic Bolus SX.1 is up to 4 years. During this period of time, both parameters (temperature and activity) are measured continuously.

Technical details

Download the product sheet to find out more about the technical details of the product.
Download product sheet