Tested and working radios

Each comes with power brick and connecting cables

On Board 900MHz Chip Antenna: 2.56 dBi
External 450 MHz Dipole Antenna: 4 dBi

900 MHz Radio Specifications for 25-Channel 250 mW EA Operation
Frequency Hopping Spread Spectrum
Classification
Maximum Output Power
250 mW
Operating Frequency Band
902.4 – 927.6 MHz
Number of Channels
25
Channel Spacing
400 KHz