德国采购需求：多参数气体传感器，rs485气体传感器，温湿度气体检测器，空气气体传感器

We are interested in obtaining a detailed quotation for sensors equipped with Modbus RTU capabilities. Specifically, we are looking for sensors that can accurately measure NH3, H2S, and CO2 levels. Please provide us with information about your available models, including pricing, specifications, lead times, and any volume discounts. We aim to assess the options for potential bulk orders, so additional details on technical support and warranty would be appreciated. Thank you!