T Logger of ista – Precision heating control for every home.
Enhance residential comfort with smart temperature monitoring.
Your benefits at a glance:
Precision monitoring
Secure and tamper-proof
Extended battery life
Integrated web monitoring
Smart temperature tracking for cozy living.
The T Logger is an indispensable tool for modern residential real estate, ensuring that properties maintain optimal heating levels efficiently.
By providing precise temperature measurements and logs, this technology empowers property managers and residents to maintain a constant, comfortable indoor climate. It aids in energy conservation by allowing adjustments based on accurate data, thereby reducing unnecessary heating costs and enhancing the overall living environment.

Smart climate control in homes with T Logger.
The T Logger brings cutting-edge temperature control to your fingertips. This device not only ensures that residential properties are heated efficiently to a standard 19°C but also provides critical alerts for temperature anomalies, supporting proactive maintenance and resident comfort.
Accurate climate control
Proactive anomaly detection
Energy efficient

Reduce heating costs with precision.
Explore how the T Logger integrates into our Heat Cost Allocation service to maximize your energy efficiency and cost savings.
Facts & figures
6,300 employees
20 countries
3.7 mil. t CO₂ emissions avoided
43 mil. radio devices
14 mil. utilisation units
How does it work?
The T Logger operates through an advanced electronic thermometer system that continuously measures and logs room temperatures. Installed directly within dwellings, it communicates data to a centralized web portal, enabling remote monitoring and management. This system ensures dwellings are heated to an optimal 19°C, provides immediate alerts for any temperature deviations, and supports energy-saving decisions by allowing residents and managers to view real-time temperature data and adjust settings accordingly. The integration with ista’s heat cost allocator further enhances its capability to optimize heating consumption and drive cost efficiencies.
Technical features
- Measurement accuracy to within 0.5°C
- Secure, wall-mounted and protected against tampering (removal)
- Temperature analysis and monitoring on the “My consumption tracking” online portal
- Interoperable with all ista radio solutions
- Operates with a long-life lithium battery (10 years)
- Simple, discreet, and easy to use
- Enables residents, managers, and heating engineers to work on the basis of factual data
- Optimization of energy consumption and alarms in case of anomalies
- Very low radio wave emissions (equivalent to those of a garage remote control)
Frequently asked questions
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