A free service to present real-time and historical data of Symmetron data loggers on the World Wide Web, with plots and statistics for each measuring station.

For more information about Captum service, click here.

For a free demonstration, click the Enter button below and login as a visitor, with user name Symmetron. View the site named Office Temperature



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Symmetron will be closed for summer vacation from August 3 to August 21, 2015. Thank you for your cooperation.

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Control RS-232 devices anywhere via GPRS Control RS-232 devices anywhere via GPRS

Communicate with remote RS-232 devices, like they were attached to your computer's local COM port.
It is possible, using the incredibly versatile Symonet modem, by Symmetron, in 4 steps:

1. Put a low-cost, GPRS-enabled SIM card in a Symonet modem.
2. With the free SymonetCOM software, configure a connection using the SIM provider settings.
3. Attach up to 3, RS-232 devices to the Symonet modem.
4. Use the SymonetCOM connection you created to access the remote RS-232 device.

For more information click here.

Virtual Wireless RS-485 network via GPRS Virtual Wireless RS-485 network via GPRS

Now you can create a multiple Symonet network, creating a virtual wireless RS-485 network via GPRS, using public Diameson server by Symmetron.
Each serial device is equipped with a Symonet modem. Sent data of one Serial device (Master) are transmitted to all the other devices (Slaves). Moreover, a network user will be able to communicate with a specific Sym-o-net and monitor the data sent by all network Sym-o-nets.

For more information click here.

Measurement data base on the web Measurement data base on the web

Symmetron Captum is a free service presenting Stylitis datalogger measurement data on the World Wide Web.

It is easy to setup a web page presenting real-time and historical datalogger measurements, in table or graph form, using Captum. It also produces measurement statistics.

For more information click here.

Switch to low cost, online GPRS telemetry Switch to low cost, online GPRS telemetry

Activate online GPRS connections between remote stations and office. Change charge model from time-based to volume-based, via Symmetron Diameson server.

• Diameson is compatible with Stylitis dataloggers and software.
• GPRS modems work with low-cost, dynamic IP, SIM cards.
• Diameson may run on customerós server.
• Diameson is also available as a Symmetron service: See Services.

For more information click here.

Communication methods with measuring stations Telemetry with remote stations

Installation monitoring is key to successful measurement station operation and maintenance. To cover all needs, a variety of communication methods between a user and the measurement station are available:

- Broadband ADSL connections.
- Traditional GSM phone calls (modem to modem).
- Online GPRS connections.
- Data emailing.
- SMS data messaging.
- SMS alarms.
- Radio modem connections.

Click here for a Powerpoint presentation.

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