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SWE-N55L Low Cost Digital Indicator

The SWE-N55L is an affordable digital indicator powered by a 4-20 mA current input. It features built-in safety circuits to protect against overload. This device offers recalibration options using linear, square, or square root functions, or custom characteristics with up to 20 points. It displays readings on a 4-digit red LED screen and includes an optional relay for LED signalling. Note: The output is for safety signalisation only, not control. Easy configuration is achieved with an IR remote controller, activated when the input current is above 10 mA.

SWE N55L Digital Indicator Product Parameters

  • Output Signal: Optional 1 x bistable relay 30V/500 mA.
  • Accuracy: 0.1% @25°C ± one digit.
  • Electrical Connections: Powered from measurement line, min. current 3.5 mA, max. voltage drop 7V.
  • Process Connections: Input current 4-20 mA, overload-protected.
  • Media Compatibility: Operating temp. 0°C to +50°C, storage temp. -10°C to +70°C.
  • Special Features: Red LED display, non-volatile EEPROM memory, IP 65 protection, wall mounting.

Product Highlights

The SWEN55L Digital Indicator is a cost-effective and user-friendly device designed for precise measurements. Featuring a single 4-20 mA current input, the device is powered by the input itself. To ensure safety and protect internal electronics from overload, the measurement input is equipped with safety circuits. The indicator offers flexible options for recalculating the measured current based on predefined transfer functions such as linear, square, and square root, or a fully definable user characteristic with up to 20 points. The measurement results are clearly displayed on a 4-digit red LED display, providing easy readability. For additional functionality, an optional relay can be integrated, with LED signalisation on the front panel. It’s important to note that the output is suitable for driving bulb lamps or sound signalling devices, but not intended for controlling purposes. The device can be conveniently configured using an IR remote controller, with the input current level above 10 mA indicated by an additional LED.


  • Low-cost digital indicator in a small wall case
  • Loop-powered
  • Measurement input 4-20 mA
  • Optional alarm output available
  • Detection and visualisation of the peak values
  • All parameters are freely programmable with a remote controller

To download the latest datasheet click here: SWE N55 L

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