Chengdu Ebyte Electronic Technology Co.,Ltd.
E92-DTU(2G4HD12) User Manual
Copyright ©2012–2021
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Chengdu Ebyte Electronic Technology Co.,Ltd.
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6 Similar products
Mode
Interface
Freq.(Hz)
Tx Power
Test
Range
Main Features
RS232/RS485
2.4G
27dBm
5km
Automatic frequency hopping,
retransmission of lost packets
RS232/RS485
2.4G
20dBm
2.5km
Automatic frequency hopping,
retransmission of lost packets
RS232/RS485
2.4G
12dBm
800m
Point-to-point frequency modulation,
two-way continuous transmission
RS232/RS485
2.4G
27dBm
8km
LoRa anti-interference, support LBT
7 User Notes and Safety Notice
1. Please take good care of the warranty card of the device. The warranty card has the factory number (and important
technical parameters) of the device, which has important reference value for the user's future maintenance and new
equipment.
2. During the warranty period of the radio station, if the product is damaged due to the quality of the product itself rather
than man-made damage or natural disasters such as lightning strikes, it enjoys a free warranty; please do not repair it by
yourself, and contact our company if there is a problem, which is provided by Ebyte First-class after-sales service.
3. Do not operate this radio in the vicinity of some flammable places (such as coal mines) or explosive dangerous objects
(such as detonators for detonation).
4. A suitable DC stabilized power supply should be selected, which requires strong anti-high frequency interference,
small ripple, and sufficient load capacity; preferably, it should also have over-current, over-voltage protection and
lightning protection functions to ensure RS485 network The bridge works normally.
5. Do not use it in a working environment that exceeds the environmental characteristics of the RS485 bridge, such as
high temperature, humidity, low temperature, strong electromagnetic field or dusty environment.
6. Don't let the RS485 bridge continuously be in the full-load transmission state, otherwise the transmitter may be burned
out.
7. Wireless RS485 bridges often have different communication distances in different environments. The communication
distance is often affected by temperature, humidity, obstacle density, obstacle volume, and electromagnetic environment;
in order to ensure stable communication, it is recommended to reserve 50 % Or more of the communication distance
margin.
8. If the measured communication distance is not ideal, it is recommended to analyze and improve the communication
distance from the antenna quality and antenna installation method. You can also contact [email protected] for help.
9. When selecting the power supply, in addition to retaining 50% of the current margin as recommended, it should be
noted that its ripple should not exceed 100mV.
Содержание E92-DTU
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