The product synopsis box type s200 projecting camera electrically operated (hereafter refers to as hanging bracket). The square box type semblance, uses four tracks to rise and fall draws the principle. The design novel, artistic natural, the operation is easy nimbly, convenient, the work is reliable, durably has the security protection. Has provided the next to the skin protection and the fine service for your firm's projecting camera. When the projecting camera does not use, collects in the aluminum alloy engine case, and has a closure, causes the projecting camera to receive the good protection, and has the security function. The use projection machine-hour, can automatically open the box gate, the projecting camera from the box toward for use. After uses up, also can cause it upwardly to retract in the box, automatically closes the gate. Completely act all by the electric appliance, the machinery completes. The movement is accurate, expansion and contraction freely, whatever user operation direction. Operation direction technology parameter 1, periphery size: B200: different)