WiFi light switch

WiFi light switch 86*86mm; 1 /2/3Gangs options available; 170-240V
white/ black/ gold color, 2 way control 
 live wire or neutral options , with one capacitor                          
1. Bluetooth quick connection
2. backlight control for sleep
3. Power off memory                                                            
RF wall panel transmitter or remote add $1.6