The HGZZ-P series of electrophysiological optical tables, also known as Faraday cage, is specially designed for medical and biological laboratories. Mounted on the safety guards of optical table workstations, the cage can effectively reduce interference of air flow, dust, sound, and magnetic field to the experiment. The cage consists of the body frame machined from aluminium profile, transparent or brown side and top panels. All the HGZZ series optical table workstations are provided with the function of electrophysiological optical tables.