The MB100 Base station is a Single-Channel Base Station that operates in the 2.4GHz license-free spectrum. It supports up to 4 full-duplex or 15 push-to-transmit shared users. Portable and compact, this models design also features weather-proofed gaskets while power is provided via 100-240 VAC, 12 VDC, 1.5V “AA” batteries or an optional rechargeable BAT850 battery.