Consists of the same size transmitting  device and receiving device.the transmitting device is made by base, with a penalty (spacing adjustable), emission antenna, a support frame. The support frame is made of organic glass, diameter:12mm and receiving device has a base, a neon bulb, a neon bulb holder, a receiving antenna, a support frame, etc.. The support frame is made of organic glass, diameter:12mm,each device size:300mm*100*200mm。