The Multi Wheel Encoder from Elma Electronic (Fremont, CA) is a miniature rotary encoder that includes an illuminated 8+1 joystick, enabling control using one finger. The encoder features Hall effect sensed incremental encoder output and 12 detents with magnetic indexing to ensure proper alignment and positioning through the life of the encoder. The encoder comes with IP66 sealing, and an outer O-ring for front panel sealing. Measuring 10.5 × 30 mm, the switch incorporates a low-profile design for space-constrained environments. Front or rear mounting is accomplished using two self-tapping screws that are driven into the switch’s polycarbonate body. The front end is metal with clear or black matte plating. The communication interface incorporates a UART output that sends an 8-bit command for every encoder step and joystick actuation, as well as an LED control input with a proprietary protocol. Operating temperature is -20 to +70 °C, and a 3 VDC power supply is required for proper Hall sensor operation.

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