This product comes with an ISO1540 bidirectional current insulator module, which allows for electrical isolation of two devices communicating through an I2C interface. It supports communication up to 1 MHz and can work with devices with a power supply voltage of 3.3 V or 5 V, providing isolation at the 2500 V-RMS level. The module requires the power supply to be connected to both sides of the system. Voltage: 3.3V or 5V;Working temperature: -40 ° C to+125 ° C; Transient resistance: ± 50 kV/μ s;Bidirectional insulation separator, compatible with I2C; It supports communication up to 1 MHz;The open drain output has a current carrying capacity of 3.5 mA on the first side and 35 mA on the second side;HBM 4 kV ESD protection on all pins; 8 kV on the bus pin;Support STEMMA QT connector Color: Black Material: plastic Package Contents: 1*ISO1540 Isolator Module