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The AT-WMBUS-04 RF module with pulse input is used both in the stationary Wireless M-Bus reading
system, as well as in the drive-by system, to record indications of the water meter connected to it, by counting
individual pulses and transmitting them over the radio in the band of 868.95 MHz, in accordance with
EN13757-4.
The housing of the AT-WMBUS-04 module is made of non-combustible ABS plastic and has been adapted
for mounting with screws and wall plugs. A two-wire conduit used to connect to the water meter is led from the
device through a cable gland.
In addition, the module is equipped with an internal wire antenna and a built-in lithium battery 3.6 V, allowing the
device to operate for a maximum of 144 months. However, depending on the type of saved profile, this period
can be significantly shortened. Moreover, there is a reed switch inside the module that acts as a magnet
position sensor.
1.
INTRODUCTION
2.
STRUCTURE
Figure 1. AT-WMBUS-04 RF module
