Outer chamber made of thick plywood sheet with an observation window and inner animal chamber is  of clear acrylic sheet, bottom of which is provided with chrome plated brass bars. A shock for controlled duration of 200V AC 50Hz single phase -0.2mA is built-in and is controlled by built-in 11 position solid state timer up to 30 seconds. Output for connection to kymograph or recorder has been brought out as terminal. An animal dropping removal tray has been provided for keeping the equipment clean.

Catalogue No. NPH-18