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Pro 4R

Pro Series Multi-frequency Wireless Reciever

The OSL Pro 4R is a single channel UHF receiver in a simple half-U chassis design. It has 3-way slide frequency switch on the rear panel, and allows for frequency grouping. It has an independent channel IR frequency Sync button set up on the front panel and adopts the new PLL frequency synthesis double-conversion technology to achieve lower spurious emission.

Critical Performance Indicators

Operating Channels

6 Channels Simultaneous Use

Frequency Selection

3-Channel Manual Selection

Frequency Bands

GB: A- 610 MHz, B- 625 MHz, C- 645 MHz
E: A- 863MHz, B- 840 MHz, C- 823 MHz

Frequency Range

50Hz - 19 kHz

Power Supply

DC12V-18V / 500mA


Wideband FM

Diversity Principle

Non-diversity, 3-channel system

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