... 1. Worldwide free ISM band: 315MHz, 433MHz, 868MHz, 915MHz (Optional)2. Remote control range up to 60 meters (in the line of sight ... )3. Each remote control can control max. 5pcs curtains4. Receiving controller drives max. 24Vdc DC ... eg: CE, FCCCurtain for home,company,hotel,hospital using wireless remote control for curtain