MIKROE-3357 Relay 3 Click Mikroe MIKROE-3357 Relay 3 Click features two single-pole double-throw relays that can be operated by output pins of the host microcontroller (MCU). This Mikroe click offers an elegant and easy solution for controlling a wide range of power applications. The two SRD-5VDC-SL-C relays are hermetically sealed and require 5V across their coils while consuming about 0.4W when active. These relays allow up to 28VDC across the connected load while conducting up to 7A.