Power supply: DC10V--30V. Standby current: 40 mA. Fingerprint capacity: 200 pieces. Relay function: 1 to 20 seconds or self-locking mode (finger passed-relay closed, finger passed-relay open) You can download the user manual for K215-V1.3 from the following website: [URL removed]. You can download the R503 user manual from the website link: [URL removed]. Video of K215 Fingerprint Control Card -V1.2: [URL removed]. K215-V1.2+R503 save fingerprint video to: [URL removed]. Instructions for K215-V1.3 control card: 1. Register fingerprint: Press the card on the SET button, the system is in registration mode and the blue light blinks rapidly. Place your finger in the collection area; fingerprint registration succeeds when you hear music; Fingerprint can be registered continuously when the system is in registration mode; If you no longer need to add fingerprints, wait a few seconds. 2. When resetting to factory settings, press the SET button until you hear "Di" and music, which means the initialization was successful. 3. Mode selection: When you select 2, the relay operates for 1s to 20s after fingerprint passing and can be set with the button. When you select 1, the relay operates when the fingerprint passes and releases when the fingerprint passes again; relay activates and releases cyclically. Relay releases when power is cut off. Note: In factory mode, all fingerprints can pass; after fingerprint registration, this function becomes invalid. R503 Upgrade to waterproof version; waterproof level: IP65 When the temperature in the usage environment fluctuates significantly, it may affect the hinge, thereby impacting the waterproof effect. Color: Silver Material: Metal Package contents: 1 x K215 control card 1 x R503 fingerprint module Only the above package contents are included; other products are not included. Note: Lighting photography and different screens may cause slight color differences between the product in the image and the actual item. The allowed measurement error is +/- 1-3 cm.