You need to contact sonoff suport. Sonnof zigbee switches should be recognized by default smartthings zigbee driver.
You can also try (EDGE Driver-Mc) Zigbee switch MC, Zigbee switch power MC, Zigbee multi switch and child MC
You need to contact sonoff suport. Sonnof zigbee switches should be recognized by default smartthings zigbee driver.
You can also try (EDGE Driver-Mc) Zigbee switch MC, Zigbee switch power MC, Zigbee multi switch and child MC