General Description:
This serial is a cost-effective UHF RFID Reader Module, which is designed with lower dissipation, high
integrated RFID chip design, cost effective and small size. It can be widely used in logistics tracking,
commodity
inventory, cargo sorting, vehicle management, personnel management, asset
management, medical systems, cold chain management, temperature monitoring, power monitoring,
anti-counterfeiting systems and production process control and many other applications.
Features:
• Designed with low power dissipation and high integrated RFID chip solution
• Support EU 840~868MHz, US 902~928MHz working frequency (or Customized).
• Support EPC Global UHF class 1 gen2 / ISO18000-6C protocol RFID tags.
• Support temperature sensor RFID tag, moisture Sensor RFID tag and some other sensor RFID tags.
• Optimized multiple tags inventory algorithm, speed is more than 100 per second
• FHSS or Fix Frequency transmission
• RF output power up to 30dBm (1dbm step adjustable)
• Support IAP firmware upgrading.
• Low-dissipation design with single +5V power supply
• Support 4 GPIO ports.
• Support UART (3.3V TTL level) interface.
• Provide DEMO and SDK for development
Specification:
| Model | SR-MU921A | SR-MU921AS | SR-MU922B |
| Picture |  |  |  |
| Electrical Parameters | |||
| Frequency(MHz) | ETSI 865～868MHz, FCC 902～928MHz | ||
| Antenna Ports | 1 SMA | 1 SMA | 4 SMA |
| RF Output Power(dBm) | 30dBm(Max) | ||
| RSSI | Yes | ||
| Step Power(dBm) | 1dBm | ||
| Baud Rate | 115200bps | ||
| Interface | TTL UART (Connector 15pin) | ||
| GPIO | 4 GPIO, including 2 GPI and 2 GPO | ||
| Modulation Method | DSB-ASK | ||
| Power | DC 5.0V (+3.7V~+5.5V) | ||
| Physical Parameters | |||
| Dimension | 60*31*8mm | 61*43*10mm | 75*51*10mm |
| Weight(g) | 25g | 44g | 66g |
| Operating Temperature | -20～+70℃ | ||
| Storage Temperature | -40～+85℃ | ||
