HC-12 Wireless Serial Port Module

Datasheet:
HC-12 Wireless RF UART Communication Module User Manual

Features:
1000m Communication Range at 9600BPS
433.4MHz to 473.0MHz Operating Frequency Range
Supports up to 100 Channels

Connection:
VCC to 3.3V Supply (or 5V Supply with IN4007 Diode)
RXD to Tx Pin
TXD to Rx Pin
GND to 0V Ground

Interfacing:
TBD

Dimensions:
27.4mm x 13.2mm x 4mm

Use-Case:
Communicates GPS data between handheld beacon and robot.