The control center is esp8266,
The relay can control a maximum current of 10A.
Integrated buzzer to feedback card swiping results.
The entire module is powered by DC3.3V.
The nfc module is RC522. This board only has interfaces. You need to purchase the RC522 module separately.
RC522 module (7.8 free shipping): https://dwz.ee/2fj
Detailed information: https://www.domoticz.cn/forum/viewtopic.php?p=1972
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