The complete system consists of a transmitter and receiver unit with built-in battery power.
The transmitter unit has the electronics for producing a modulated infra-red beam and is contained in a robust plastic enclosure. The modulation frequency is user adjustable in the audio range.
The receiver houses the detector and amplifier with integral loudspeaker with built-in gain control to adjust the sensitivity. Typical range is up to 2m with the tone disappearing if any obstruction passes through the beam.
Product code: LA20-600A