Specifications
Leader in IOT Embedded Solution
Page 9 of 15
⚫ Insufficient power supply will make the module’s transmit power abnormal.
⚫ Harsh test environment will make signal attenuation greater.
⚫ When the module communicates with other end after passing through the wall, the wall will have
a great impact on signal attenuation. The signal will be attenuated greatly when most of signals
are passing through the wall.
⚫ If the module is too close to the ground, resulting in poor communication due to being absorbed
and reflected.
5. Notation of Annexes
1. Recommended to use DC stabilized power supply to power for the module. The power ripple
coefficient should be as close as possible and the module needs to be reliably grounded. Please be
noted that the positive and negative poles of power supply shall be correctly connected. The
module may be permanently damaged if connected reversely.
2. Prohibited to have any metal objects around the module antenna. Otherwise, the communication
distance may be seriously affected.