Welcome to the store! Operating Voltage: DC12V Working Current: Less than 100 mA User Capacity: 15000 Heavy Volume: 80 g Ambient Temperature: -20℃ to 60℃ Card Reading Distance: 1-10 cm Set the card: Step 1: Turn off the power, connect the S1 jumper cap 2, 3, side, back to electricity, three nights after the green light flashes. : Brush two consecutive blank cards (the first to increase the card, the second to remove the card), the red light flashes, continuous card at this time. Step 3: Turn off the power, connect the jumper cap 1, 2 again, and finally to electricity, card increase. Add or remove users: Add users: brush \"add card\" in standby mode, then brush to add user cards in a row, then brush \"add card\" to finish Remove users: brush \"Remove card\" in standby mode, then brush to remove user cards in a row, then brush \"Remove card\" to finish Remove all users: brush \"Remove card\" in standby mode, then brush \"add card\", then brush \"Remove card\" to finish. Due to different product batches, the appearance may be different, which does not affect the use. Type: 13.56Mhz IC version Color: As Shown Material: PC+Metal Package Contents: 1 * Access Control Module Kit 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 to be slightly different from the real thing. The allowable measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!