RRU2881M is a high performance UHF RFID Module. It is designed upon fully self-intellectual property. Based on proprietary efficient digital signal processing algorithm, it supports fast tag read/write operation with high identification rate. It can be widely applied in many RFID application systems such as logistics, access control, anti-counterfeit and industrial production process control system.
Model
Size
RRU2881M
FEATURES
lSelf-intellectual property;
lSupport ISO18000-6C(EPC C1G2) , ISO18000-6B protocol tag;
l865~868MHz/902~928MHz frequency band(frequency customization optional);
lFHSS or Fix Frequency transmission;
lRF output power up to 30dbm(adjustable);
lEffective distance up to 9m* (with external 6dbiL antenna and tag E41);
lSupport RSSI;
lMaximum inventory speed over 500pcs/s;
lTag buffer size up to 600PCS (Max. 128bits EPC length) or 180PCS (Max.496bits EPC length);
lSupport answer and real-time-inventory work mode;
l4 MMCX-J antenna port with antenna auto-tuning and failure-detection;
lLow power dissipation with single +5 DC power supply;
lSupport 3 GPIOs (1 input and 2 outputs);
lSupport RS232 (3.3V TTL level) and full speed USB;
lHigh reliability design;
lSupport on-the-site firmware upgrading.
*Effective reading distance and tag interrogation speed are directly related to the antenna, tags, and the working environment.
CHARACTERISTICS
l Absolute Maximum Ratings
ITEM | SYMBOL | VALUE | UNIT |
Power Supply | VCC | 6 | V |
Operating Temp. | TOPR | -20 ~ +65 | ℃ |
Storage Temp. | TSTR | -40 ~ +85 | ℃ |
l Electrical and Mechanical Specification
Under TA＝25℃，VCC＝+5V unless specified
ITEM | SYMBOL | MIN | TYP | MAX | UNIT |
Power Supply | VCC | 4.75 | 5 | 5.25 | V |
Current Dissipation | IC | 1500 | mA | ||
Frequency | FREQ | 860 | 960 | MHz | |
RF Output Power | PRF | 0 | 30 | dBm | |
RF Power Accuracy | APRF | +/-1 | dBm | ||
RF Power Flatness | FPRF | +/-0.2 | dBm | ||
Receive Sensitivity | SR | -85 | dBm |
INTERFACE
1.Host Interface
No. | Symbol | Comment |
1 | VCC | +5VDC |
2 | VCC | |
3 | GND | Ground |
4 | GND | |
5 | EN（USB_5VSENSE） | Enable (USB Present Detection) High level effective with internal 1Mohm resistor pulled-up to +3.3V |
6 | nRST | Low level effective external reset input with internal 10Kohm pulled-up to +3.3V |
7 | ANT1 | Antenna Indicator 00-ANT1 01-ANT2 02-ANT3 03-ANT4 |
8 | ANT0 | |
9 | USB-DM | USB Data Minus |
10 | USB-DP | USB Data Positive |
11 | GPO2 | General Output (3.3VTTL level) |
12 | GPO1 | |
13 | GPI1 | General Input (3.3VTTL level) |
14 | TXD | Serial Data Output |
15 | RXD | Serial Data Input |
2.Antenna Interface
MECHANICAL DATA(UNIT mm)：
1. When designing fixed reader with RRU2881M, please take care of heat sinking and remember to make sure the heat sinker of the module is closely and stably attached to the reader’s bottom plate;
2. ANT1 is the default antenna port. Please pay attention to antenna port’s definition.
3. Please refer to RRU2881M user’s manual for detailed protocol description.
Remark:
1. Specifications are subject to change, please pay attention to our latest version.
2. Shenzhen RoyalRay Science and Technology Co., Ltd. reserves the right to the final interpretation of the above terms.