The Electronic Photo Relay is designed to switch electrical circuits in relation to the light intensity. It is made in two types:

  • The first type is designed to regulate the electrical street lighting in relation to the environment lighting. The model is very suitable for premises where such lighting control is required.
  • The second type is designed for control of light oil and gas boilers.

Technical data:
  • Operation temperature range: (-10 °C) – (+40 °C).
  • Range of the operation relative humidity: up to 80%
  • Breakthrough voltage between the contacts: 1000V
  • Warranty time of 24 months.


Electronic photo relay EFR – User manual. 206kB