865-868Mhz/902-928MHz USB and TTL232 UHF RFID reader module writer with ceramic antenna

Integrated antenna character

Be sensitive and stable to the tags identify.

   Stable reading distance 2-3 meters.

   Multi-tags identify, >50pcs tags.

   Reading distance speed, >50pcs/sec.

Solve the exothermic problem completely.

   No need for connecting any other outer radiating device. It can work without exothermic reaction in the normal indoor temperature.

   Sustain electricity<200mA @ 3.5V (26 dBm Output). Pulse peak current<260mA.

Outstanding stability:

   24 hours x 365days work normally.

   Appearance little influenced by cover, electromagnetic environment etc.

   Wide temperature design and the temperature drift coefficient.

Good consistency:

   Good design in consistency.

   Choose the top level components to keep each parameters stable and consistence.

Brief and high efficient interface of hardware and software.

Peripheral circuit is very easy. The signal power, no need for extra connecting tantalum capacitor.

Parameter

Working Voltage

DC 3.5V – 5 V

PCB size

Pcb size:50*50mm , Ceramic antenna size:40*40mm  Overall height:8.5mm

Standby current

<80mA (EN  pin high level)

Sleeping current

<100uA (EN  pin low level)

Operation current

180mA @ 3.5V (26 dBm Output,25°C).

110mA @ 3.5V (18 dBm Output,25°C).

Operating time

<100mS.

Operation temp.

 - 20 °C  -  + 70  °C

Storage temp.

- 20 °C  -  + 85  °C

Working humidity

< 95% ( + 25 °C)

Protocol

EPC global UHF Class 1 Gen 2 / ISO 18000-6C

Frequency

865-868MHz/902-928MHz

Working area support

US, Canada and other regions following U.S. FCC

Europe and other regions following ETSI EN 302 208

Mainland China; Japan; Korea; Malaysia; Taiwan

Output power

18-26 dBm

Read/write range

Read: 200-250cm;write: 10-50cm(adjusted)

Output power accuracy

+/- 1dB

Output power flatness

+/- 0.2dB

Receive sensitivity

< -70dBm

Store tag peak speed

> 50pcs/sec

Tags storage capacity

200pcs tags @ 96 bit EPC

Tags RSSI

support

Communication interface

TTL Uart interface

Communication baud rate

115200 bps(default and recommend)

38400bps

Heat-dissipating method

Air cooling(no need for out install cooling fin)

                        Pin definition

1

GND

2

EN(RF module enable power: HIGH(ACTIVE), LOW(POWER DOWN))

3

RXD (Data input, TTL level)

4

TXD (Data output, TTL level)

5

VCC DC3.5V-5V