The DRTXM4 is the highest-efficiency HAR transmitter made. It produces a strong signal to broadcast your highway advisory messages at the maximum legal power allowed by the FCC. The efficient DRTXM4 does not require enclosure ventilation, even in the extremely hot climates, thus ensuring years of clean, dry and trouble-free operation. Comprehensive metering is clearly displayed on the front panel to indicate how the transmitter is performing.
The DRTXM4 is power adjustable to use the full 10 W allowed by FCC and can be adjusted from 0.0 to 10 watts by an adjustment knob located on the side of the transmitter.