Electrolysis satellite with 2 LED (one red, one green) indicators. The red light is the thermolysis only indicator, which indicates when the thermolysis is on and then off. Make sure to choose which epilator you are using, as the ST-250 and Evolution 7 HD have different cable connections.
2-LED Electrolysis Satellite
Electrolysis satellite with 2 LED (one red, one green) indicators.
Evolution 7 HD, ST-250