The first area of focus should be size. Even the smallest modules have the same core capacities click as larger modules. While there is also variables that set them apart, size is important to take into consideration within the design of an complete product. In most cases, it is best to select the smallest possible CO2 sensor module that meets all the requirements of the product. The smallest options available are often incorporated into small sized systems such as wall pads and monitoring devices. They will are also used in air conditioners, gas equipment, and building ventilation settings. Keep in mind that many types of the same size often times have different voltage inputs and specifically include or exclude features such as sleep mode support.