R503-S fingerprint identification module is a high product developed on the basis of R503 models. It uses 160 x 160 pixel capacitive fingerprint sensor with a fingerprint capacity of 150. Embedded complete fingerprint identification algorithm and protocol. It has the functions of fingerprint , 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. 7-color color light ring, waterproof. Color: silver+gray+black Material: plastic + metal Package Contents: 1 x Fingerprint Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.