1. General

Radio Frequency Identification RFID is the acronym for radio frequency identification, commonly known as RFID. Radio Frequency Identification RFID is a non-touch automatic identification technology, radio frequency signal through the automatic target recognition and access to relevant data, to identify without human intervention, it can work in a variety of harsh environments. RFID technology can identify the high-speed moving objects, also identify multiple tags, the operation is quickly and conveniently.

Shenzhen eTel technologies co., ltd. according to market demand of the wireless internet of things RFID, Combine with GPRS FAM function, develop ET7901 RFID GPRS Reader, it able to real time send RFID TAG information via the GPRS network to data center. Data center platform will receive the data and save into database, users can just use browser to access data and view all information.

ET7901 RFID Reader is mainly used in schools, residential security, plant access, government access control, automotive systems, ET7901 RFID Reader also support FAM feature, which supports 3 DI, 1 DO, 1 AI, 2 TE ports, it can be connected to different sensors to cooperate with RFID function.

Industrial Design

ET7901 RFID Reader is industrial design which built-in watchdog chipset to ensure the system work continuously, Watchdog monitoring the GPRS module and CPU all the time, if the GPRS module or CPU does not response for long time, Reader will restart automatically. Reader is very suitable for long-term continuous work applications.

Main and backup data center

ET7901 RFID Reader support main and backup data center, user can set both main data center IP address or domain name, when Reader  fail to connect with main data center, it will try to connect backup data center automatically.

TAG buffer

ET7901 RFID Reader can save the TAG card information in the NVRAM buffer, if the GPRS network is abnormal, the reader will save data in the NVRAM, when the network returns to normal, the data will be sent immediately. NVRAM has feature for save data even power lose, so even reader power lose, Tag data will still save in the NVRAM.

Embedded Li-battery and Temperature sensor

ET7901 RFID Reader built-in 1000mA Lithium battery, it can work for 3 hours if the external power supply cut off. The built-in temperature sensor can real-time monitoring of environment temperature, and the outside TE port can be extended to the user device surface to monitoring equipment temperature.

SMS Remote Restart

ET7901RFID reader supports SMS remote control, users can query the device working status through SMS, also user can reboot reader through SMS.

DO port programmable output

RFID Reader DO (digital output) port supports programmable output, according to the requirement of user site, the level of output level, switching time, times would be programmable.

Zone type

FAM DI ports support zone type setting which can be set to as common zone, delay zone, intelligent zone, emergency zone, home zone, according to the user site conditions and sensor type, set the correct zone type to prevent false alarm, missing alarm.

SMS Backup

FAM communication with the RFID data center through GPRS; if GPRS disconnect, FAM can send the TAG information via SMS for backup tunnel.

Timing arm/disarm, password arm/disarm

FAM support timing arm/disarm function, it can perform a specified time every day to arm/disarm; FAM also support any mobile phone number via a password to arm/disarm, after the instruction is executed successfully, FAM will arm/disarm information to the administrator phone as well.

Clock synchronization

RFID Reader support clock synchronization; it can read the clock from SMS or get clock from management platform by GPRS.

Graphical configuration software

ET7901 RFID Reader provides full graphical software configuration, easy to use, and supports import or export configuration file; so users just simply click a few icons to quickly setup RFID system.

3. Specifications

• GPRS Dual Bands 900Mhz/ 1800Mhz
• GPRS Quad Bands 850/900/1800/1900Mhz (Optional)
• CDMA 800mhz (Optional)
• Dual SIM Slot (Optional)
• TAG data buffer
• Smart power management
• Automatic power supply detection
• Li-Battery inside (Optional)
• Support 2 DI pulse input (Optional)
• Clock synchronization
• DO port programmable output
• DI port zone type setting
• Timing, password arm/disarm
• SMS backup tunnel
• PC based configuration tool
• Real time OS, steady system
• Watch dog design, ensure reader alive
• Low consumption, industrial design
• Fully type approved with ETSI GSM Phase 2+ standard
• Enhanced EMC/EMI design

• Frequency: 902MHz ～ 928MHz(Accept customized frequency)
• Supported ISO18000-6B, 6C, EPC Class 1, EPC Class 1 GEN 2
• Work mode: FHSS or fixed frequency(settled by software)
• Max RF output: 30dBm
• Power smoothness < 0.5 DB
• RF range: 20~30 dBm, adjust by software
• Reading/Writing TAG time: Single TAG 8ms
• Reading/Writing TAG distance: More than 8m when reading, writing range is 70% of reading range(depend on antenna)

• Industrial class GPRS wireless module
• Embedded PPP, TCP/IP Stack
• Support main and backup service center
• Support TCP/IP and UDP/IP
• Supports DNS and dynamic data service center IP address
• Support continually or sleep work mode
• Support Carrier public & special APN
• Remote monitoring and control

• GPRS Antenna: 50Ω/SMA Female;
• RFID Antenna: 50Ω/SMA Female
• SIM/R-UIM: 3V
• Configuration: RS232
• Data Communication: RS232 (RS485, Ethernet Optional)
• DI: 3 Ports (0-3V False, 3-36V True)
• AI: 1 Port
• DO: 1 Port
• TE: 2 Ports

AI = Analog Input

DO = Digital Output

• Voltage: DC 12V -18VDC
• Consumption: 2A@ DC12V

• Dimension: 116mmx155mmx26mm
• Weight: 370g
• Operation temperature: -45~+75ºC
• Storage temperature: -55~+85ºC
• Relative humidity: 95% (no-condensing)

ET7901 RFID Reader products can be used for many industrial applications, such as:

• Logistics such as container management, pallet management, asset tracing etc.
• Ticketing access control
• School access system
• Office of the access control, security systems
• Government office access control, security systems
• Supermarket access control, security, vending system
• Remote machine room Management System