Work Voltage:AC 80V-250V                    

use transformer to instead of  capacitor                                        

Work Frequency: 315MHz/433MHz

Battery free transmitter, eco product      

Transmitter: 42x75 mm         Receiver:96x60 mm

Transmitter Power :< 10mW                 

Adjustable Volume(4 levels), 25-85dB

IPX7 waterproof  button                            

Learning coding function

36 high quality melodies

200 meters remote distance

Button can be pressed more than 100, 000 times

Different plugs standards (Euro/US/UK etc.)

CE, RoHS ,FCC available