The ATR-N1 module, when used in conjunction with an electrochemical in-situ testing device, can be applied to related tests such as electrocatalytic oxidation of organic molecules, CO2 reduction, biomolecular reactions, and metal ion/air batteries. Two types of electrochemical testing devices, internal reflection and external reflection, are provided for use in conjunction with ATR-N1. The standard configuration is a silicon prism or a calcium fluoride prism. We offer training on the chemical deposition method for gold, platinum, palladium, copper and other metal films on the surface of silicon crystals, and provide customized prisms according to different experimental requirements.