TTL 3DRobotics 3DR Radio Telemetry Kit 433Mhz Module

TTL 3DROBOTICS 3DR Radio Telemetry Kit 
433MHZ Module For APM APM2 
Very small size 
Light weight (under 4 grams without antenna) 
433-434.79MHz 
Receiver sensitivity to -121 dBm 
Transmit power up to 20dBm (100mW) 
Transparent serial link 
Air data rates up to 250kbps 
MAVLink protocol framing and status reporting 
Frequency hopping spread spectrum (FHSS) 
Adaptive time division multiplexing (TDM) 
Support for LBT and AFA 
Configurable duty cycle 
Built in error correcting code (can correct up to 25% data bit errors) 
Demonstrated range of several kilometers with a small omni antenna 
Can be used with a bi-directional amplifier for even more range 
Open source firmware 
AT commands for radio configuration 
RT commands for remote radio configuration 
Adaptive flow control when used with APM 
Based on HM-TRP radio modules, with Si1000 8051 micro-controller and Si4432 radio module 

Package Contents: 
TTL 3DROBOTICS 3DR Radio Telemetry Kit 
433MHZ Module For APM APM2