SeeedStudios Long Range RF Link Kits w/ Encoder and Decoder

You want to make this thing talk to that thing waaay over there? Try the SeeedStudio super-long range 433Mhz RF link bundle! They're claiming 2KM range for wireless data transport & remote control use!

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Description
Documentation

SeeedStudio beats 433MHz into submission to create a super-long (up to 2KM / 1.25Mile) range link! Complete with VCO , PLL technology, steady Frequency and super anti-jamming ability, it's a usable pair of modules to create a wireless data transport or remote control!

Specification:

Working volt : 5V
Working current: ≤2.5mA(5.0VDC)
Superheterodyne (VCO, PLL)
Modulation: OOK/ASK
Working band: 433.92MHz
Bandwidth: 1.5MHz
Sensitivity: -105dBm (50Ω)
Data Rate: < 5Kbps
Decoder: PT2272
Antenna length: 18cm
Emission Distance: 2 KM
Finished, and ready to use!

Note: Uncoil the antenna!

[Data Sheet]: PT2262 RF Decoder Chip Datasheet