① Power supply voltage. Please check the power supply to ensure that it is between 1.8V and 3.6V. If it exceeds 3.6V, the module will be damaged;
② Stability. Check the stability of the power supply, the power supply must not fluctuate too much;
③ Anti-static. Ensure the anti-static operation during the installation and use of the power supply, high-frequency devices have electrostatic sensitivity;
④ Welding. The module can not be reflow soldered and wave soldered, otherwise it will damage the module.
① Obstacles. Due to its physical characteristics, the 2.4G frequency band has poor penetration. When there is an obstacle in straight line communication, the communication distance will be greatly shortened;
② Interference source. Temperature, humidity, and electromagnetic wave interference in the same frequency band will lead to an increase in the packet loss rate of communication;
③ Antenna. The antenna uses 50Ω impedance wiring. If there is a metal object near the antenna or the module is placed inside the shielding case, it will cause signal attenuation;
④ CE foot. In the program configuration, the transmitting device is not kept at a high level, which leads to a decrease in sensitivity when receiving an answer signal;
⑤ Transmit power. When configuring registers, the higher the transmission power configuration, the farther the transmission distance will be;
⑥ Launch rate. If the configured transmission rate is too high, the transmission distance will be relatively reduced;
⑦ Low voltage. The power supply voltage is less than 3.3V, resulting in insufficient power supply to the module, which relatively affects the module's transmit power.