Datalog security service

Security Guard & Plant Maintenance Systems

Electronic guard and maintenance staff management for reliable checks of patrol rounds and maintenance inspection with real-time functions such as man down alarm and real-time control of service and coverage.

Guard and Maintenance Control

Online, offline and hybrid systems

As the inventor of electronic guard control and with 30+ years of experience, our dataLog® guard and maintenance control system offers an extensive and pragmatic range of functions. It assists the planning and monitoring of ongoing rounds, precinct runs and/or maintenance check.  It informs you via email or app about status or events and automatically logs all services for you in clear reports.

The dataLog® system can be customized to meet your exact needs. The online app offers real-time functions and many advanced features for task planning and documentation. The guardiX II offline data collectors are child's play to operate without much training, are robust and have a long battery life - ideal for simple, yet electronically monitored services.

The Commander Connect central management software offers many functions for patrol round planning and precinct management. In addition, customizable reports can be generated tailor-made for staff management or as proof of service.

  • 125 kHz and NFC (also in mixed mode)
  • Real-time features: round status, man down alarm
  • Special features: Photo function with remarks, checklists, instructions
  • Smartphone or data collector (also in combined operation)
  • Extensive evaluation, customizable reports
person scanning guardix at guard points
Guardix handover
person doing rounds with wand
security personnel with wand in his hand

Cloud-based systems

deisterCheck AppdeisterCloud
deister check application

deisterCheck App

Use your smartphone as a data collector

The deisterCheck app turns your smartphone into a data collector. Besides collecting checkpoints, you can add photos and complete checklists, to enhance the service.

The deisterCheck app supports real-time features, such as man down alarm or tracking.  These features can optionally be activated and.

  • Facilitated round guidance with instructional support for personnel
  • Real-time features such as emergency call, man down alarm, status updates
  • Photo function with annotation
  • Checklists, status selection, instructions, etc.
  • Android compatible


Secure transfer of security data

The deisterCloud serves as a routing service for all smartphone acquired security data. This data is transferred in the cloud and is bully encrypted.

Data can be transmitted in real time via the cloud. User logins and bidirectional exchanges from and to the user are possible at any time.

If the cloud connection is interrupted, the smartphone stores the data locally until the connection is re-established - the data is then synchronised without loss of data or time stamps.

  • Secure international hosting
  • No data loss even in case of connection failures
  • Real-time data exchange

Offline & Hybrid Solution

guardiX® IIguardTransguardiX Connect®Event cards
guard wand

guardiX® II

Robust data collector

The guardiX® II data collectors are characterized by their reliable and simple operation. They read RFID-based checkpoints without contact. The data is date/time stamped and stored for later transmission and processing. Built in LEDs and vibration give the user immediate feedback on the successful detection of the respective checkpoint.

With robust design, no moving parts and IP67 certification, guardiX® II data collectors are perfect for harsh environments and everyday use. Particularly where patrols must be conducted discreetly, or in noisy environments, vibration provides significant advantage as user feedbackt. Exceptional battery life with standard AA batteries results from the economical vibration function; up to 500,000 checkpoints can be read with one set of batteries.

  • Wear-free and contactless checkpoint detection
  • Compatible with all previous deister electronic evaluation systems
  • Very long battery life
  • Robust design with no moving parts
  • Very easy to use, no extensive training necessary

More about guardiX



Desktop local readout station

The guardTrans is the readout station for all guardiX® II data collectors. It is connected to a PC/laptop via the USB interface and transfers the acquired data after insertiing the data collector. The real-time clock in the guardiX® II data collector as well as all other parameters are synchronized during the data download to ensure maximum accuracy for each set of rounds.

Audiovisual signals provide immediate feedback to the user about the data download.

More about guardTrans

guard wand stataion

guardiX Connect®

Desktop data collection station for any location

With the help of the guardiX Connect®, the collected data can be transmitted from anywhere to the control center immediately after each patrol. All you need is a power outlet or a USB port.

The data transfer is securely encrypted via cellular communication module using the deisterCloud. You are completely independent of your local IT infrastructure.

More about guardiX Connect

cards or documents used to record and manage various events or incidents, particularly in the context of security management or monitoring systems.

Event cards

Additional round information

With event cards, the security service provider can document additional events along the round. For example, it can be noted that a window is open or that a smoke detector is defective by scanning the appropriate card with the data collector.

The security guard carries the event cards with them and can simply hold the corresponding card in front of the data collector as needed. According to the area of application, the significance and evaluation of the events is determined by the user of the system themselves.

  • Simple operation
  • Customize events
  • Detailed documentation

All event cards


Checkpoint KSC30


125 kHz and NFC combined

Checkpoints store their digital information in an RFID chip, which can be read contactless by either smartphone and/or data collector, avoiding the wear and tear of a contct checkpoint and allowing these checkpoints to be embedded as needed.

The checkpoints support two technologies: 125 kHz and NFC, ensuring that the dataLog system offers maximum compatibility. Old and new data collectors like guardix II as well and apps like the deisterCheck app are fully compatible.

The small, inconspicuous plastic housing can either be glued or fixed with a special screw for more security. The checkpoints are insensitive to changing temperatures, weather, dirt and other environmental influences. Passive operation eliminates no batteries required.

All checkpoints

Benefits of our solution

checking Tasks on Deistercheck


Checklists, selection lists, instructions

Security guards and maintenance staff may take on important additional tasks on their rounds. These special functions can be linked to a checkpoint which can display a checklist and concrete instructions for actions to be taken when the checkpoint is reached. These additional tasks may also be logged in the reporting system.

  • Freely createable checklists
  • Selection of self-created states
  • Instructions and notifications
Upload photo on Deistercheck

Photos for advanced reporting

Take pictures and write comments

During the round, a photo can be taken at any time with the app. The photo is automatically time stamped. The photos also appear in the reports and can be annotated, e.g. "Open window: 1st floor, room 2314".




125kHz and NFC

Connecting the old and new worlds with RFID

The dataLog® system is compatible with both 125 kHz and NFC RFID checkpoints (although smartphones can only read NFC checkpoints). This means that smartphones and data collectors can be used side by side in the same system and old 125 kHz checkpoints do not need to be replaced.



docking station setup

Unique hybrid solution

Flexible and independent

The guardiX Connect docking station connects to the Commander Connect management software for uploading the round data from anywhere in the world - and does not require a connection to your IT infrastructure. The data is sent via the built-in cellular communication module. This makes the proven guardix II data collector even more flexible to use.



Integration with electronic key cabinets

Key management system compatibility

When clients provide their keys to a security service, a lot of responsibility is incurred. It is critical to store these keys in a responsible, verifiable and well-managed manner. An electronic key cabinet makes it possible and also offers many other functions that lead to more cost efficiency and reliability in the process.

Both dataLog® security guard and proxSafe® key management are managed in the same Commander Connect central software and are seamlessly integrated with each other. The security staff can automatically receive the rights for key removal based on round scheduling. Each key removal and return is electronically monitored and documented.

  • Automatic assignment of rights for key removal
  • Electronic documentation of every key removal and return
  • Automatic notification if keys are not returned on time
  • Keys are sealed tamper-proof on RFID keyTags


Request Information

We would be happy to help find your solution.  Have questions?  Need literature or specifications?  Send us your request and we will quickly respond.

Contact form

phone phone


USA & Canada

Deister Electronics USA, Inc.

8576 Wellington Road
20109 Manassas

+1 703 368 2739