Note:　It is 2 pin US plug type, adapter is needed and each remote control can be paired to control 4 socket. 
 
Working voltage: AC220V
Working frequency: 315-433MHz
Rated Power: 500W
Remote Distance: <50 meters
No sound, no direction limit, and works with all wall plug
Remote control distance: not less than 50 m
Using digital coding techniques, and each set has a specific coding, coding is not the same between the two products
The controller's maximum current of 7A (1000W resistive load) to extend the life and security, with electrical power below 500W.