The Resi9 energy sensor Universal, in combination with the appropriate current transformers, is an energy meter for single-phase and three-phase circuits. Measurement is carried out via additional connected Resi9 current transformers with 80A, 160A, or 250A. Thanks to the serial Modbus communication protocol, it can be connected to a higher-level system. In conjunction with our logic controllers, the Wiser for KNX, and spaceLYnk, energy measurement in KNX systems can be easily set up. Up to 6 current transformers can be connected to one energy sensor. An energy sensor only requires 1 Modbus address, allowing for the use of up to 15 energy sensors depending on the controller. The device measures bidirectionally, meaning both produced and supplied active energy (kWh) are recorded. Additionally, the device has two digital outputs, for example, for generating control signals - pulse width - 0 - 9999 ms. Nominal voltage: AC 100-240 V, 50/60 Hz or DC 80-265 V. Power loss is less than 5 VA AC: less than 3 W DC. The operating temperature ranges from -25°C to +60°C. The protection class is IP40 for the front display and IP20 for the housing. Dimensions are (W x L x H): 36 x 70 x 114.6 mm.