Rlink 8-Channel Long Range UHF Receiver
Size: 45x30x6 mm
Weight: 28 g (including two antennas)
Voltage: 4-6 V
Current: 75 mA at 5 V
Channel number: 8 ch
Working frequency: UHF, 430Mhz
Parallel connection support: Yes (you can connect two receivers in parallel to make it 16-ch)
RSSI signal detect support: Yes
"Tested distance up to 12km low and 18km high power.
Great product."