The robust and durable ERGO 120 is designed with a sunlight readable and configurable 2.4” Color TFT LED back-lit, sunlight readable display, ten (10) 1 or 2 step push buttons, four (4) single step side buttons with optional two (2) proportional side buttons and a large, easy to reach bottom mounted STOP button. All push buttons are fully configurable. Standard pre-configured ERGO 120 transmitters include Half and Full duplex feedback transmission options. It has a status LED on the front panel and is powered with one (1) Hetronic 3.7V Li-Po rechargeable battery. Fully customizable to your needs.