This product comes with ESP-01S Descriptions: The intelligent relay module based on ESP-01S WIFI module design, can be used for DIY their own smart [...]
Coil Voltage : DC 5V;load capacity : 10A 250Vac/125Vac/30Vdc/28Vdc material : plastic, metal Color : Blue;weight : 30g Package content : 2 x power relay
This module can be used for light detection, brightness detection, with power indicator (red) and relay pull-in indicator (blue), and with four M3 screw [...]