Retevis RT81 DMR walkie talkie runs digital and analog modes in one unit, letting sites migrate without replacing the whole fleet. TDMA splits 12.5 kHz into two 6.25 kHz slots for better spectrum use, clearer audio and more secure calls.
Across all pack sizes the shared design brings IP67 sealing against dust and 1-meter immersion for 30 minutes, high/low power selection, high-gain antenna and 2200mAh battery for long shifts in schools, factories, warehouses and hotels.
RT81 highlights
Analog plus DMR
Switches modes smoothly to work with existing analog fleets.
IP67 job-site sealing
Withstands rain, dust and muddy construction conditions.
Long-range high-gain antenna
Pushes signal through buildings and across large coverage areas with low-power option to save battery.
Noise-cancelling speaker
Delivers clear audio in noisy warehouses and outdoor work zones.
RT81 specifications
Calls: Group call, improved noise cancellation
Modes: DMR digital + analog
Power: High/low selectable
Rating: IP67 dustproof, waterproof to 1 m for 30 min
