E49-900M20S

[IC]：CMT2300A

[Frequency]：850~930MHz

[Power]：20dBm

[Distance]：3km

[Size]：20*14mm

[Feature]：Low power

E49-400M20S

[IC]： CMT2300A

[Frequency]：410~510MHz

[Power]：20dBm

[Distance]：2.5km

[Size]：20*14mm

[Weight]：1.2±0.1g

[Feature]：Low power consumption, high cost performance