This Radio Telemetry kit offers a great low price, longer range (approx one mile with supplied antennas) and superior performance. The system utilizes the 915Mhz band and provides a full-duplex link using HopeRF's HM-TRP modules running custom, open source, firmware.
Interface to the module is via standard 5V-tolerant TTL serial / FT232 USB serial.
1x Radio Telemetry base station (USB Connection)
1x Telemetry Transceiver (Pin Header)
1x lead set
Antenna connectors: RP-SMA connector
Output power: 100mW (20dBm), adjustable between 1-20dBm