Embedded complete fingerprint identification algorithm and protocol. It has the functions of fingerprint collection, fingerprint comparison, search and template storage. Support low power finger detection. It is equipped with stainless steel threaded shell, which is convenient for installation. The installation opening diameter is 22mm. The product has been upgraded to meet more application fields. R503-S fingerprint identification module is a high price product developed on the basis of R503 models. It uses 160 x 160 pixel capacitive fingerprint sensor with a fingerprint capacity of 150. 7-color color light ring, waterproof., Manufacturer: Mcnhbdgg