The GZ80BL is a WLCSP (wafer level chip scale package) integrated circuit from Relpol, a leading manufacturer of relays, circuit boards, and components. The GZ80BL combines four relays, microcontroller, USB port, and measurement functionalities into a very small size 5mm x 5mm package. The GZ80BL is designed to be used as a battery-powered device and provides an easy way of connecting to an external circuit, making it ideal for applications such as home automation, robotics and IoT projects. It features an on-board microcontroller and eight solid-state output contacts, as well as noise immunity and short-circuit protection. The GZ80BL is also certified according to UL and RoHS standards.