🔓【Compatibility】Works for Sifely Branded Product.
🔓【Contactless】Unlock Sifely Product in a contactless way as far as 2 meters.
🔓【Easy Set-Up】Easily set up wireless key fob via "Sifely Smart Lock" app. One wireless key fob only works for one lock. 
🔓【Satisfaction Guaranteed】30-day money back guarantee, 1-year product warranty and a lifetime customer support following the date of purchase.