## 3 Results
### Verification of the Communication Quality of Smart Home Modules  
The measurement results clearly indicate an increase in the levels of active and reactive power consumption by smart home modules when increasing their distance from the Wi-Fi access point/router with which they are to maintain communication during the implementation of load control procedures. To verify the quality of communication and the variability of its conditions when changing the distance of the modules from the access point, measurements of the RSSI (received signal strength indication) indicator and data transmission speed in the communication channel for Wi-Fi radio signals generated by smart home modules as an access point were carried out. The measurements are for illustrative purposes and were carried out using publicly available Wi-Fi monitor applications available for mobile devices, which also operated the smart home modules analyzed in this article. The results are presented in Tables 7 and 8, respectively, for the mobile devices near and far from the module operating as an access point.  
\begin{table}
\begin{tabular}{l c c c c c} \hline \hline \multirow{2}{*}{**Module**} & **Frequency** & **RSSI** & **Data** & **Upload Data** & **Download** \\  & **(Mhz)** & **(dBm)** & **Throughput** & **Rate (kbps)** & **Data Rate** \\ \hline Blebox & & & & & \\ Switchbox & 2437 & \(-\)48 & 54 & 0.8 & 2.1 \\ Gosund & 2412 & \(-\)44 & 54 & 0.9 & 1.2 \\ Scheckly 1 & 2427 & \(-\)57 & 54 & 0.8 & 0.5 \\ Sonoff Basic & 2437 & \(-\)51 & 54 & 0.6 & 1.1 \\ R2 Supla & & & & & \\ Sonoff & 2442 & \(-\)51 & 54 & 1.1 & 1.4 \\ FR & & & & & \\ Sonoff & 2442 & \(-\)28 & 54 & 0.7 & 1.3 \\ ZgBINE & & & & & \\ tplink Socket & 2437 & \(-\)31 & 65 & 0.6 & 2.0 \\ HS110 & & & & & \\ \hline \hline \end{tabular}
\end{table}
Table 7: Wi-Fi signal quality measurements measured close to smart home modules operating as an access point.  
\begin{table}
\begin{tabular}{l c c c c c} \hline \hline \multirow{2}{*}{**Module**} & **Frequency** & **RSSI** & **Data** & **Upload Data** & **Download** \\  & **(Mhz)** & **(dBm)** & **Throughput** & **Rate (kbps)** & **Data Rate** \\ \hline Blebox & & & & & \\ Switchbox & 2437 & \(-\)76 & 48 & 0.4 & 1.6 \\ Gosund & 2412 & \(-\)76 & 24 & 0.5 & 0.7 \\ Scheckly 1 & 2427 & \(-\)81 & 36 & 0.3 & 0.2 \\ Sonoff Basic & 2437 & \(-\)77 & 18 & 0.6 & 0.7 \\ R2 Supla & & & & & \\ Sonoff & 2442 & \(-\)77 & 48 & 0.6 & 0.7 \\ Scheckcheck & & & & & \\ Zigbee & 2442 & \(-\)76 & 36 & 0.5 & 1.0 \\ ZBMINI & & & & & \\ tplink Socket & 2437 & \(-\)71 & 58 & 0.5 & 1.9 \\ HS110 & & & & & \\ \hline \hline \end{tabular}
\end{table}
Table 8: Wi-Fi signal quality measurements measured far from smart home modules operating as an access point.  
The data clearly indicate a significant decrease in the strength and quality of the Wi-Fi communication signal with the increase of the distance between the communicating devices. Among the analyzed modules with the Wi-Fi communication interface, the tplink Socket HS110 stands out positively in terms of signal quality, but at the same time it is characterized by relatively the most significant levels of active power consumption, in particular to maintain a higher quality of communication when the module is further away from the access point/Wi-Fi router in the rooms. This issue is the subject of separate research currently being conducted by the author. Also noteworthy is the good level of signal strength for the module with ZigBee communication. This is a different technique of radio communication, characterized by low power consumption while maintaining good communication quality parameters [2; 23]. Therefore, many manufacturers offer smart home modules with this technology as an alternative to local data communication within rooms or flats at the facility level.