CMR Projects

SIM20 - SMD tri-band r.f. transceiver module - R165.00 + VAT (no antenna)

SIM20 - low cost half-duplex r.f. transceiver data for peer-to-peer and broadcast transmission.

It includes a high-speed microcontroller and high-performance RF chip, ensuring that it has high receiving sensitivity, programmable transmitting power and high data rate. It supports transparent date transfer without complex configuration, with UART (CMOS/TTL), RS232, I²C/SPI interfaces.

The module has an input voltage range of 3,0 to 3,6 V. It measures 21 x 13.8 x 2,6 mm, 1.5gms, and operates over the temperature range from -20°C to 70°C at 10-90% RH.

Typical applications include wireless sensors, remote control/security systems, wireless metering, wireless medical telemetry service (WMTS), keyless entry, home automation, and process and building control.

• 433-434.79MHz, 863-870MHz and 902-928MHz
• Air data rate 2,400-115,200 baud
• Communication interfaces RS232 (UART CMOS/TTL) - SPI/I2C available on request
• 512 bytes of interface buffer
• Output power with 4 user-adjustable steps 18dBm (20mW), 15dBbm, 12dBm and 9dBbm
• Transmitter frequencies at 200KHZ intervals
• Modulation schemes 2GFSK
• Receiver sensitivity -112dBm at 2400 bps
• Up to 1500M range at 2400bps, decreases in urban areas due to buildings etc.
• Sleep current 5 µA
• TX current 80mA at 18dBm, into 50ohm load
• RX current 26mA
• Input voltage 3.0 - 3.6 Vdc (+.-50mV)
• Small footprint 21mm x 13.8mm and 2.6mm thick
• ETSI 300-220, FCC Part-15