Power supply:DC10V--30V     Standby current:40mA     Fingerprint capacity:200 pieces     Relay Function: 1-20 second or Self-locking Mode(Finger passed-relay closed,finger passed again-relay opened)     You can dowload K215-V1.3 user manual from the following website: https://www.dropbox.com/sh/9itshhkx0r9mdyt/AABPH-Dhleve3A1Mn5ZA34pCa?dl=0; You can download the R503 user manual from this website link: https://www.dropbox.com/sh/epucei8lmoz7xpp/AAAmon04b1DiSOeh1q4nAhzAa?dl=0; K215-V1.2 fingerprint control board video on Youtube:https://youtu.be/1Zk2bjRdRpg; K215-V1.2+R503 register fingerprint video on Youtube:https://youtu.be/_kFsBPBsgU4          Instructions for K215-V1.3 control board:     1. Register Fingerprint: Press SET button shortly,system in register state and blue indicator light flash fast, place your finger in the collection area, fingerprint register successful when hearing music;Fingerprint can be registered continuously when system in register state; if no need adding fingerprint more, waiting a few seconds.     2. When back to factory default, press SET button until hear "Di" and music,means initialization operation successful.     3. Mode Selection Usage:     when chose 2, operating time of the relay is 1s-20s after pass fingerprint,can adjust by knob.     When chose 1, relay operated when fingerprint passed, and then relay released when fingerprint passed again, relay operated and released circularly. Relay released when power off.     Note:In factory status, any fingerprint can pass, after register fingerprints, this function is invalid     R503 Upgrade to waterproof version, waterproof level: IP65     When the temperature of the use environment fluctuates greatly, it may affect the glue, thus affecting the waterproof effect.     colour: silver     Material: metal          Package Contents:     1 x K215 Control Board     1 x R503Fingerprint Module          Only the above package content, other products are not included.     Note: Light shooting 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.