3DR Radio Telemetry 433Mhz 500MW Air and Ground Data

Transparent serial link.Range of 1 mile with supplied aerial.
Demonstrated range of several kilometers with a small omni aerial.
Can be used with a bi-directional amplifier for even more range.
MAVLink protocol framing and status reporting.
Frequency hopping spread spectrum (FHSS).Adaptive time division multiplexing (TDM).

Specifications:
Item Name: 3DR Radio Telemetry Module
Band: 433MHz
Receiver sensitivity: -117 dBm
Air data rates: up to 250kbps
Transmit power: up to 20dBm (100mW)
Antenna connectors: RP-SMA connector
Output Power: 100mW (20dBm), adjustable between 1-20dBm
Interface: Standard TTL UART
Connection status: LED indicators
Material: plastic
colour: Black

Package Contents:
1 x 3DR digital transmission module kit

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.