50pcs M1 Classic 1k ISO14443A RFID Smart Cards 13.56MHZ Card M1 Cards White Door Entry Hotel Key Cards Zebra Printable RFID rewritable Card

Works as expected. Easy to set up. Works with Sifley Locks and 1/10 of their price.

EDIT: After running into the SAME issue with another brand of cards (for a different system) I discovered my HR dept was punching some of the lanyard holes right through the tag antenna! So, I humbly return to BEG forgiveness and update my 2 stars to 5 stars, as that's CLEARLY not a fault of the manufacturer. Time for some retraining on our end.ORIGINAL REVIEW (no longer valid)4 out of 19 didn't read.We'll definitely be looking for a different brand.

I bought these to be able to give electronic keys to people that I could disable at any time with my Aqara U100 lock. They work perfect! Not much else to say besides that this is a much cheaper option than the official Aqara nfc tag and these fit in a wallet.

NOT EXPENSIVE AND WORK GREAT

Could not get them to link with my phone or iPad.

How to use??

Lo que ocupaba!!!