Opto 3 click is a relay Click board™, equipped with two pairs of optically isolated solid-state relays (SSR). One pair of SSRs is used to provide a reinforced galvanic isolation for the external signals used to drive the microcontroller (MCU) pins, while the other pair of SSRs is used to allow the host MCU to drive some external equipment, allowing up to 40V between the SSR contacts in OFF state, and currents up to 2A while in ON state, thanks to a very low ON-state resistance. Opto 3 click to be used in applications that require reinforced galvanic isolation for both their input and output stages. Opto 3 click is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.