HAC-MLW Metering Module User Manual V1.0
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8.3. Precautions for production setup
1). The magnet triggers hall components of meter module. The triggering time must be greater than 2S. If it’s
less than 2S, there is a possibility that the triggering of the data report will fail.
2). DeviceEui is the only address for communication between meter and the supported software. The
DeviceEui entered by the supported software must be consistent with the DeviceEui of meter.
3). When the meter is connected to the Internet (the red light is always on) or when re-transmitting, the
function of triggering “data report” is invalid.
4). There is a fault flag in the data reported by the meter, and the parameters can be set only after the fault flag
is cleared.
5). Infrared communication will affect the communication between the product and infrared tools under strong
light. It is necessary to avoid performing infrared communication under strong light.
6). Use wireless communication to set the parameters, try to avoid multi-station simultaneous production
settings, and the production settings will interfere with each other. The more stations, the greater the
interference, and the greater the probability of parameter failure.
7). When modifying APPKEY, the default value of APPEUI must be modified. The default value of APPEUI
is 4841434D4C570001.
9. LoRaWAN Gateway Device Feature
9.1.Electrical characteristics
No.
Function
Function Description
1
Working voltage
PoE IEEE 802.3af Class A, 24V
；
DC 12~24V
2
Working frequency
It’s compatible with LoRaWAN® (433~510MHz or 863~928MHz ,
which is optional)
3
Max transmitting power 27±1dBm
（
It conforms with the power limitation requirements of
different areas in the LoRaWAN protocol
）
