The B-meters RFM-AMB is a Wireless M-BUS (Meter-Bus) temperature and humidity sensor, designed to gather environmental data such as temperature and humidity from a specific area, such as a room, and transmit that data wirelessly.
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The B-meters RFM-AMB is a Wireless M-BUS (Meter-Bus) temperature and humidity sensor, designed to gather environmental data such as temperature and humidity from a specific area, such as a room, and transmit that data wirelessly.
Wireless M-BUS Communication: The sensor uses Wireless M-BUS to transmit data, which is widely used for metering and monitoring in smart building systems, offering ease of integration with other systems.
Data Storage:
Anti-Removal Alarm: This feature ensures that the sensor is securely mounted and cannot be easily tampered with. If someone attempts to remove or interfere with the device, the system will trigger an alarm, adding an extra layer of security.
Efficient for Monitoring: The sensor is suitable for use in rooms or other indoor spaces where consistent monitoring of temperature and humidity is important for comfort, safety, or equipment protection.
Temperature reading range |
from -10°C to +85°C (max. ±1°C) |
Humidity reading range |
0 – 80% (± 3%) |
Dimensions (l x h x p) |
88 x 88 x 25 mm |
Power supply |
3.6 V Litihium battery |
Max Battery life |
10 years* |
Protection |
IP20 |
Working temperature |
from +1°C to +55°C |
Radio transmission |
868 MHz WMBUS Standard EN 13757-4 |
Transmission range |
Up to 300 meters |
Data transmission frequency |
Programmable: month, day, hour range, frequency (seconds) |
Transmitted data |
- Actual temperature -min/max/average temperature of last hour - min/max/average temperature of last day - Hystorical monthly average temperature data up to 12 previous months (up to 6 if used combined with Humidity historical data) - Actual humidity - min/max/average humidity of last hour - min/max/average humidity of last day - Hystorical monthly average humidity data up to 12 previous months (up to 6 if used combined with Temperature historical data) |
Allarm |
Low battery, module Removal |
The battery life strongly depends on the working time window, set during the configuration process, and on the environmental conditions.
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