Chengdu Ebyte Electronic Technology Co.,Ltd.
User Manual
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Chengdu Ebyte Electronic Technology Co.,Ltd.
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b. The radio frequency antenna should not be close to objects that have a great attenuation effect on radio frequency, such
as metal, walls, ground, trees, sea water, etc., so as not to affect the transmission of radio frequency signals.
c. When the suction cup antenna is installed, the wires should be as straight as possible, and the suction cup base should
be attached to the metal object.
d. It is best to keep the distance between the RF antennas of the product at 1.5 meters or more. If the high-power RF
product is too close to the RF antenna, the receiver cannot receive data.
e. If the measured distance is not ideal, it is recommended to analyze and improve the communication distance from the
antenna installation method, antenna quality and LoRa wireless configuration parameters.
h. The product comes standard with antenna parameters, see "Product and Accessories List". If the feeder is not long
enough, users need to purchase a feeder extension cable, or purchase an antenna with a longer feeder. Do not peel off the
antenna and extend it by itself, which will cause the impedance mismatch of the RF antenna, resulting in serious signal
attenuation.
3.4 Switch input and output hardware connection
3.4.1 Wet node: NPN normally open/PNP normally closed sensor (DI) wiring
method
Figure 3-2 Sensor wiring diagram
3.4.2 Dry Contact: Key Switch (DI) Wiring Method
