SIM20B - RF module

1.original brand SIM20B module
2.multi-channel low power wireless communication module
3.SIM20 GSM GPRS module

1.original brand SIM20B module
2.multi-channel low power wireless communication module
3.SIM20B GSM GPRS module

SIM20B is a high integrated half-duplex,multi-channel low power wireless communication module. It includes high speed MCU and perfect performance RF chip with high receiving sensitivity, programmable transmitting power and data rate. SIM20 supports the multi-channel choice, transparent date transfer without complex user setting and UART(CMOS/TTL),RS232,RS485,IIC/SPI,ADC interface.

The leading features of the module make it ideal for industrial applications such as automatic metering,wireless medical telemetry service,home automation,process and building control.

General Features
- Standard
– ETSI 300-220, FCC Part 15,
- Support peer to peer transmission and broadcasting transmission
- Optional 16bits RFID
- Flexible software programmable setting option
- Frequency bands support
– 433MHz – 434.79MHz(SIM20-A)
– 863MHz – 870MHz(SIM20-B)
– 902MHz – 928MHz(SIM20-C)
- Modulation schemes: 2GFSK
- Frequency interval: 200KHz
- transmission distance: 1000 Meters@1200bps
- Transmit power: 20mW, 10 steps adjusting
- Receive sensitivity: -115dBm@1200bps
- Sleep current consumption: 5uA
- Tx current consumption: 35mA@10dBm
- Rx current consumption: 28mA
- Input voltage of the module: 3.3V~5.5V(±50mV)
- Physical Dimensions: 40mm×20mm×2.8mm
- Operation temperature: -20°C to +70°C
- Storage temperature: -40°C to +85°C
- Humidity: 10%~90%
- Air date rate: 1200 – 115200bps
- Interface date rate:
– 1200 – 115200bps
– RS232/RS485
- Interface check mode: 8E1/8N1/801
- Interface buffer size: 512bytes

Interfaces:
- RS485 Interface
- UART(CMOS/TTL) Interface
- RS232 Interface
- IIC Interface
- SPI Interface
- ADC Input