Description: It is the fluorescent light with camera inside,the player can assembly it in the celling before the game start, partner can see the backside marked of the cards in next room by TV, then he can tell the palyers what cards it is. A Function: adjust the camera to the sweet spot, then it can see the backside mark of cards and transmit the photo to next room, the partner can see the cards ink in the TV. B Specification: distance:1.5m-2m 2-2.5m 2.5-3m 2.Estimate working hour: plug in external power C Configuration: It was included 1 light with camera,1 wireless transmitter, 1 remote control D Advantage: 1.marked cards for this camera can not be seen by contact lenses or perspective glasses 2.Plug in external power, no time limitted 3.Scanning cards speedily and long stable transmitting 4.Not easy to arouse suspect.