| Model # : | GKA-1002 | |||||||||
RS485 door access control system is based on RS485 communication which uses bus connection (handshaking mode). The maximum transmission distance in RS485 system is 1,200 meters (3,888 feet) or longer with RS485 expander. Because of the built-in RS485 communication chip and handshaking bus wires connection, the system will remain same communication if any node is defective.
In RS485 door access control system, the shield twisted 2 core wire is recommended, being shield and being twisted is for reducing the noise generated by magnetic fields from the environment and maintain the stability of the communication.
The transmission and reaction speed of RS485 door access control system would be declined gradually when the transimission distance expanding due to the the spedcial characters of RS485 communication( the control center ask and each node answer one after another, the rest nodes must be waiting for their turn if an answering signal is transimissed over the bus wires).
RS485 door access control system is still the most popular used door entry control sytem because of its easy installation and cheap cost. When the system installs access control main boards under 100, the system could run smoothly without any problem, but when the amount exceed 100, you will be recommended to be careful to consider the stability before your purchasing.
One thing to remind, in theory the distance for RS485 is 1200 meters, but it is recommended that the best performance is under 800 meters because the longer distance the less stable the data transimission is.
Module No: GKA1002
Basic functions :
RS485 and RS232 communication
Could control two doors by 2 readers(which means this door could be controlled by both in&out direction)
Card capacity: maximum 20,000 cardholders
Events storage capacity on controller:100,000
1.Access control
256 time zones & unlimited holidays
Remote open
Door status monitoring map
Door open too long alarm
Doors interlock ( only one door could be opened at the same time )
Anti tail-after ( the access will be denied when you exit if you don't read the card when you enter)
Card, password, card + password optional ( depends on the type of the reader )
Access events history query
Multi-card access ( the access could be granted only by a certain group of people read their own individual card simultaneously )
First card in (all the other access could be granted during a period only after an appointed card being read )
Forced open alarm( input a durass code to launch the alarm in control center )
Peripherals control
Timing upload tasks to controllers
2. Time attendance
Normal working hour set up
Other working hour set up
Holiday schedule
Leave/ business trip compensation sign in
Manual sign in
Attendance report
| Parameter | One door access control system | Two door access control system | Four door access control system | |||
| Type No. | GKA1001 | GKA1001.NET | GKA1002 | GKA1002.NET | GKA1004 | GKA1004.NET |
| Communication | RS232/ RS485 | TCP/IP | RS232/ RS485 | TCP/IP | RS232/ RS485 | TCP/IP |
| Short description | Dual directional control for one door | Dual directional control for two doors | Single directional control for four doors | |||
| Main board size | 160mm×106mm | 160mm×106mm | 218mm ×106mm | |||
| Control box size | 273mm×228mm×65mm | |||||
| Power supply | 12VDC 3A or 12VDC 5A | |||||
| Main board power consumption | Less than100mA | |||||
| Input reader format | Wiegand 26 (compatible with any reader under this standard, such as Motorola 、HID、EM、、Mifare oneetc. ) | |||||
| Readers input No. | 1× 2 | 2× 2 | 4× 1 | |||
| NC/NO output No. | 1× 2 | 2× 2 | 4× 1 | |||
| Door open delay | From 1sec to 600secs | |||||
| Maximum capacity | N×256 | Unlimited | N×256 | Unlimited | N×256 | Unlimited |
| Note: N stands for the Nos of COMs or RS485 HUB ports, Global Keyaccess access control supports 256 COMs in one system | ||||||
| Working temperature | -40 to 70℃ | |||||
| Working humidity | 10-90%RH,no condensation | |||||
| Card capacity | 20,000 privileges | |||||
| Storing capacity when offline | 100,000 | |||||
| Power failure Protection | Flash memory | |||||
| Max distance from reader to main board | 100 meters, suggest not to exceed 80 meters | |||||
| Max distance from previous main board to next main board | RS232: less than 13 meters, suggest not to exceed 3 meters RS485: BUS length less than 1200 meters, suggest not to exceed 1000 meters, could reach 3000 meters with RS485 expander. TCP/IP : rely on network performance. |
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| Accessories | Main board, main board cover, power supply and control box, cables, disk, 2 keys, cartoon | |||||
| Open too long alarm | Yes | Yes | yes | |||
| Illegal invasion alarm | Yes | Yes | yes | |||
| Force open alarm | Yes | Yes | yes | |||
| Alarm activation auxiliary | Software alarm only if no expander board connected, it will activate auxiliary equipments when expander board connected | |||||
| Manual setup NO or NC the door | Yes | Yes | yes | |||
| Remote opening door | Yes | Yes | yes | |||
| Interlocking doors | Yes | Yes | ||||
| Anti tail-after/anti pass-back | Yes | Yes | ||||
| Multi card open | Yes | Yes | yes | |||
| Timing open or close | Yes | Yes | yes | |||
| Monitoring map | Yes | Yes | yes | |||
| Emergency open or close | Yes | Yes | yes | |||
| First card in | Yes | Yes | yes | |||
| Keypad password | Yes | Yes | yes | |||
A: RFID reader, keypad RFID reader, Fingerprint reader, long range UHF RFID reader, all of these readers must be Wiegand26(or 34) output.
Q: What kind of cards is your system supporting?
A: 125KHz card, EM card, or Mifare 1 card, or EPC G2 card.
Q: Does your reader read HID card?
A: Our default reader doesn't read HID card, however, we could provide HID 125KHz compatible reader, but no HID Mifare compatible reader. please check with us when you order.
Q: What is the shape of your cards?
A: Standard card is credit card size(85.6×53.98×1.8/1.0/0.8mm), we also can provide keyfob(with built-in chip).
Q: What is first card in? does your system have this function?
A: In some cases, the door should be opened by an appointed person first, then the rest of people could open the door afterwards.
Yes, we have this function.
Q: What is multiple cards in? does your system have this function?
A: In some cases, the door could only be opened by several people simulteneously, such as bank, or other important offices.
Yes, we have this function.
Q: What is door's interlock? does your system have this function?
A: This function can only be set up on one control panel, the doors controlled by this controller can not be all opened at the same time, which means only one door can be opened at one time, if any one door is opened, the rest of the doors can not be opened.
Yes, we have this function.
Q: Does your system support photo display of card holder when people show the card?
A: Yes, we could add photo when editting the personal information and display the photo in monitoring screen when people show the card.
Q: Could your system take a photo of the people when (s)he show the card?
A: Yes, we provide camera adaptor which could be linked to a particular door, when the people show the card on this door, the camera will take a photo and save in database, which you can check later at any time.
Q: Is there a door open alarm or indication on the Software?
A: Yes, this could be shown in real time monitoring screen. Note the system needs adding door sensor on control panel.
Q: Can we install the main software on the Server and then install same software on the user P.C. (Client-Server)?
A: Yes, the software can be installed in any PC in network, by sharing the database, all managers can check the software(if they have the user name & password) from any PC.
Q: Does your system have Fire-Alarm System and force-open in emergency?
A: Yes, we will provide an extended board for this function, the controller can open all the doors(on itself) when receiving fire alarm(this must be programmed in software).
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