This simple chime may be installed at gateways or doorways. It detects a break in a light beam coming from a source on the opposite side of the walkway. A familiar ding-dong sound through the supplied speaker will both welcome the visitor and announce an arrival.

Technical Specification

  • Power Supply : 4.5VDC @ 50mA(working)
  • Sensitivity of photo-transistor : On-board potentiometer
  • PCB Dimensions : 2.73" x 1.56" x 0.8" (69.3mm x 40mm x 20mm)

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