Some years ago I developed a solar-powered surveillance camera with data transmission by Wi-Fi or GSM network with SIM card. However, some users wanted a Wi-Fi model with greater range. That got me thinking about a Wi-Fi repeater powered by a solar panel.For the repeater function, I use a very small router from the company TP Link (such as the TL-WR802L) which offers two advantages: low power consumption (around 200 mA) and the absence of an on/off button. This miniscule box functions primarily as an Ethernet/Wi-Fi router, but it can be configured as a repeater. I have tested several versions of this model and it works perfectly — with the exception of those purchased in China (in which the ROM is exclusively in Chinese, and not flashable to English.