1.Wireless door chime with light indicator
2.A portable battery operated wire free doorbell with visual indication

  Model No.: TH-D18

  Sounds Dingdong , Ring, music and music
  Frequency: 433.92MHZ or 315MHZ
  Easy to install -No wiring or AC power required
  Digital coded and radio signal to prevent false triggering
  Designed to the international standard to meet requirement of Radio
  Additional transmitter or receiver is availabl