Vanch VM-5GA  RFID UHF reader module       Integrated antenna character 1. Be sensitive and stable to the tags identify.    2. Stable reading distance 2-3 meters.    3. Multi-tags identify, >50pcs tags.    4. Reading distance speed, >50pcs/sec. Solve the exothermic problem completely.    1. No need for connecting any other outer radiating device. It can work without exothermic reaction in the normal indoor temperature.    2. Sustain electricity<200mA @ 3.5V (26 dBm Output). Pulse peak current<260mA. Outstanding stability:    1. 24 hours x 365days work normally.    2. Appearance little influenced by cover, electromagnetic environment etc.    3. Wide temperature design and the temperature drift coefficient. Good consistency:    1.the good design in consistency.    2. Choose the top level components to keep each parameters stable and consistence. Brief and high efficient interface of hardware and software. 1.       Peripheral circuit is very easy. The signal power, no need for extra connecting tantalum capacitor. Installation method: support 5pin WAFER installation.  

Specification
Model No.	VM-5GA
Electrical parameters
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	EPCglobal UHF Class 1 Gen 2 / ISO 18000-6C
Frequency	840-960MHZ
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)

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