The ELSYS ERSTEMP-W ERS Temp wM-Bus is a wireless M-Bus temperature sensor for indoor use, designed for continuous monitoring of room temperature. The device is mounted on the wall by inserting an AA lithium battery and securing the backplate with screws or adhesive tape; it then automatically begins transmitting data. Key technical features at a glance:
- Battery life: up to 15 years with a single ER14505 battery, reducing the need for maintenance visits.
- Temperature Accuracy: Measures temperatures ranging from 0 to 50 °C with an accuracy of plus or minus 0.2 °C, providing reliable data for climate monitoring.
- Wireless transmission: Data is transmitted via Wireless-M-Bus mode C1a, eliminating the need for manual readings.
The device complies with the EN 13757:2018 standard and is OMS 4.0-compatible, enabling integration into existing meter reading infrastructures. With an IP30 protection rating and a compact housing measuring 76.2 x 76.2 x 22.5 mm, the sensor is suitable for use, for example, in offices or residential buildings where data must be collected wirelessly over long periods of time without requiring any cabling in the infrastructure. Large-scale deployments are particularly useful in locations where regular on-site maintenance is not feasible.
| Equipment | |
|---|---|
| antenna | internal |
| sensors | ambient temperature |
| Communication | |
| connectivity | wMBUS |
| frequency | EU868 |
| interfaces | Herstellerlösung |
| Power supply | |
| power supply | battery, included, replaceable |
| battery details | ER14505 |
| Certifications | |
| enclosure protection class | IP30 |
| Others | |
| Brand | ELSYS |
The sensor is designed for indoor climate monitoring and ambient temperature measurement within wireless M-Bus networks.
No, this specific model is an indoor climate sensor that does not include NFC capabilities.
The device is designed for wall-mounting and can be installed using either screws or adhesive tape.
The device is powered by a removable 3.6V AA Lithium battery (ER14505).
The expected battery life is 15 years, although this can vary depending on environmental factors.
The sensor is intended for indoor use in temperatures ranging from 0 to 50 °C and humidity levels between 0 to 85 %RH (no condensation).
The device provides high-precision data with a temperature accuracy of ± 0.2 °C.
For the best results, it is recommended to install the device at a height of 1.6 meters.