In case you enter a discount code during checkout that doesn't exist or isn't currently active, then you can see the message: “Unable to find a valid discount matching the code entered”.

Of course not, most coupons may be used only by you when you received them directly from Shenzhen Sonoff Technologies Co.,Ltd. As the Shenzhen Sonoff Technologies Co.,Ltd coupon includes your User ID, it cannot be resold or transferred in any way.

Once you find available coupon codes and are approved by the Shenzhen Sonoff Technologies Co.,Ltd official store, you can submit them to us at Coupon Submission. We are not responsible for the reliability of coupons provided by customers.

Yes. Coupons for each Discount Event of Shenzhen Sonoff Technologies Co.,Ltd will be collected here while being updated day by day. Sometimes, there will be deals not updated promptly but it's rare, we expect sympathy from you. 

Shoppers can get coupons for their first purchase at the store. However, it is not all the time, sometimes, they cannot apply a discount on items selling out or items not contained in the promotion program. It depends on the time you shop at Shenzhen Sonoff Technologies Co.,Ltd.