Energy consumption can be monitored quickly and easily with the help of Grässlin energy meters. The devices are used for everything from measuring electrical energy consumption for simple applications, e.g. to monitor the cost of important consumers, through to monitoring multiple consumers, e.g. for billing in apartment buildings, shopping centres, camping sites and marinas. Measuring energy consumption with current meters and measuring operating hours with an operating hours meter both help in monitoring buildings and keeping track of wear on systems and machines, as well as runtime measurement of vehicles. The meters are available as rail-mounted units, surface-mounted devices or installed devices, and they are secured with excellent tampering protection thanks to a sealable housing.