Various data loggers, such as temperature and humidity loggers, with which you monitor temperature and humidity in for example greenhouses, warehouses, refrigerated transport and HVAC systems. The range also includes voltage loggers, thermocouple loggers and carbon monoxide loggers (carbon monoxide loggers). You can also order Graphtec's durable and expandable data loggers, with which you measure e.g. the following quantities; temperature, humidity, voltage, UV, CO2, acceleration, mechanical quantities, logic messages and pulses. Many loggers come with software that allows you to configure yourself e.g. sampling frequency, start of time and transfer the stored data to the PC.