... ) 4, Anti-interference(1/6560) 5, CE, FCC, RoHS Product parameters : Remote control output<10mwRemote control voltage≤12VReceiver volume range25 ... pictures: Package includes:Wireless doorbell main unitWireless remote control (transmitter unit) with double sided adhesive tapeOne ... , graphic design, mold manufacturing, plastic molding, quality control, etc…6. Using western simplicity type for product ...