Features:  SV611 is a low-power high-integrated wireless data transmission module, which uses a high-performance Silicon Lab Si4432 RF chip.  Extremely low reception sensitivity, coupled with the industry's leading 100 mW output power, ensures wider range and improved link performance. The module provides multi-band, multi-channel and network ID to reduce the interference in the transmission process and improve the transmission performance. Users can set parameters of serial port and RF through PC software or online modification. Small volume, long distance transmission, wide range of operating voltage and even rich and convenient programming settings make it widely used.     Specification:  1400 m transmission distance.  Working band selection: 433MHz.  GFSK Modulation Mode.  Multiple Interfaces of TTL/RS232/RS485.  Sensitivity up to - 121dBm.  Maximum output power: 100mW.  Automatic Antenna Matching and Bidirectional Switching Control.  Various Settings of Serial Communication Parameters.  40 Channels Optional.  4-byte configurable network ID.  Double-byte configurable node ID.  Operating Voltage: 2.8-6.0 V.  Working Temperature Range: -40 ~+85 °C.  Weight: 9g.     Applications:  Wireless 232/485 data communication.  Wireless remote telemetry.  Remote meter reading.  security system.  Industrial data collection.  Home automation telemetry.  Building community automation and security.     Package included:  1 x SV611 Wireless Module