Propasecard indicators are efficient ambient condition indicators, especially for humidity; they are stiff cards with reversible reading spots for relative humidity. They are available in different configurations and can be used to check the degree of humidity from 5% to 95%. Another ambient condition indicator is the temperature indicator, which is an essential system in the case of substances or materials that can become altered if exposed to specific temperatures. It indicates the temperature, if the temperature is exceeded, and the length of time it is exceeded. Lastly, the ambient condition recorder allows you to check the temperature and humidity indices and monitor the ambient conditions.