## 3 Results
### Active and Reactive Power Measurements  
First, for all smart home modules described in Section 2.2, measurements of instantaneous active and reactive power consumption were carried out with the loads switched on. The measured values indicate the total level of active and reactive power consumption, for both the load and the smart home module itself. Measurements were carried out for two cases: (i) the smart module located close to the Wi-Fi access point/router--maximum distance up to 5 m, and (ii) the smart module located far from the Wi-Fi access point/router--distance from 20 m up to a maximum of 22 m. Active and reactive powers are marked \(P_{near}\), \(P_{far}\), \(Q_{near}\), and \(Q_{far}\), respectively. The measurement results in the form of graphs are shown in Figures 9-15. Figure 9: Graphs of instantaneous power consumption levels for the classic bulb, 60 Watt load: (**a**) active power of smart home modules + load and (**b**) reactive power of smart home modules + load. In turn, the results of instantaneous power measurements for smart home modules without loads are summarized in Tables 1-4. The location of the modules near and far from the Wi-Fi access point/router and the activation and deactivation of the relays were considered during the measurement procedures. Figure 11: Graphs of instantaneous power consumption levels for the LED lamp, 10 Watt load: (a) active power of smart home modules + load and (b) reactive power of smart home modules + load. Figure 12: Graphs of instantaneous power consumption levels for series-connected classic bulb 60 Watt + LED lamp 4 Watt + LED lamp 10 Watt: (a) active power of smart home modules + loads and (b) reactive power of smart home modules + loads. Figure 10: Graphs of instantaneous power consumption levels for the LED lamp, 4 Watt load: (a) active power of smart home modules + load and (b) reactive power of smart home modules + load. Figure 14: Graphs of instantaneous power consumption levels for the kitchen mixer, 76 Watt load: (**a**) active power of smart home modules + load and (**b**) reactive power of smart home modules + load. Figure 15: Graphs of instantaneous power consumption levels for the 630 Watt toaster load: (**a**) active power of smart home modules + load and (**b**) reactive power of smart home modules + load. \begin{table}
\begin{tabular}{l c c} \hline \hline
**Module** & \(\mathbf{P_{near\_ON}}\) **(W)** & \(\mathbf{Q_{near\_ON}}\) **(VA)** \\ \hline Blebox Switchbox & \(1.010\) & \(-0.259\) \\ Gosund Socket S111 & \(0.722\) & \(-0.106\) \\ Shelly 1 & \(0.744\) & \(-0.025\) \\ Sonoff Basic R2 Supla & \(1.172\) & \(-0.720\) \\ Sonoff Socket S26R2 TPE-FR & \(0.680\) & \(0.045\) \\ Sonoff ZigBee ZBMINI & \(0.140\) & \(-0.402\) \\ tplink Socket HS110 & \(1.094\) & \(-0.043\) \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Instantaneous active and reactive power consumption levels of smart home modules—module located close to the Wi-Fi access point/router, with the relay switched on. Figure 13: Graphs of instantaneous power consumption levels for the 30 Watt room fan load: (**a**) active power of smart home modules + load and (**b**) reactive power of smart home modules + load. Figure 15: Graphs of instantaneous power consumption levels for the 630 Watt toaster load: (**a**) active power of smart home modules + load and (**b**) reactive power of smart home modules + load. For the collected data, the levels of additional active power, \(P_{add}\), consumed by the modules at their distance from the Wi-Fi access point/router (\(P_{far}\)) were calculated in relation to the power consumed in a close location (\(P_{near}\)), according to the relation:  
\[P_{add}=P_{far}-P_{near}\;[\text{W}] \tag{1}\]  
The results, considering the operating status of the smart home modules (relay on and off, respectively), are shown in the form of graphs in Figure 16.  
For all modules, there is an increase in the active power level when the relays are turned on.