1Support one-door 2Doesn't need to connect on the computer,can works alone 3Remote control:Divided into a receiver and a transmitter, the receiver is connected to the access control power supply, the transmitter is used for remote unlock. 4Door open button:Additional unlock buttons provide more unlock options 5Remote control:Divided into a receiver and a transmitter, the receiver is connected to the access control power supply, the transmitter is used for remote unlock. Features:Support one-doorDoesn't need to connect on the computer,can works aloneRemote control:Divided into a receiver and a transmitter, the receiver is connected to the access control power supply, the transmitter is used for remote unlock.Door open button:Additional unlock buttons provide more unlock optionsDing dong doorbell:The doorbell is connected to the door guard so that visitors can call the hostSpecification:Access Control Keypad:Card Type: EM-IDcardFrequency: 125KhzRead Speed: Reading range: 0-10cm / 0.08-0.39inInput Voltage: DC12VOperating current: Open way: card, password, card and passwordPower Supply:Input Voltage: AC 110-240V (Worldwide voltage)Input Frequency: 50-60HzOutput Voltage: DC 12V/3AAdjustable Locking Delay: 0~15 secNO lockVoltage: DC12VCurrent: 200mAKeep: 500 kg / 1102 lbFault protection: mode-free (locked when power is off)Use a 2-wire non-polarized connection to access control or exit devicesSignal output: noKeyfobs(10PCS):Operation Frequency: 125KHzReading distance: 3-10cm / 1.18-3.94inEach keyfob has an unique ID numberPassword access control: Approx. 109 x 85 x 23mm/4.3 x 3.3 x 0.9in Power supply: Approx. 115 x 90 x 34mm/4.5 x 3.5 x 1.3inNO lock: Approx. 149 x 28 x 34mm/5.9 x 1.1 x 1.3in Packing size: Approx. 205 x 300 x 92mm/8.1 x 11.8 x 3.6in Product Weight: Approx.1111g/39.2ozPackage list:1 x ADM21 Access Control1 x Power Supply