2M on the box meansthe cable length of the sensor, not detection range.
manual not updated and 4m on the manual is not correct.
Retro-reflective sensor for gate opener, boom barrier;
for the power supply, there are 110V/220V version and 12V/24VDC version;
2M on the package means the cable length of the sensor, not for detection range.
-- Light resource: Infrared LED
-- Strong anti-shock and anti-vibration.
-- Non-contact object detect: Avoid the photoelectric sensor to contact the object directly, protect the inducing component from damage and extend the operation life of the sensor.
-- Detect any objects with different materials: Detect objects by the light quantities reflected and received, detect objects such as glass, metal, plastic, wood, fluid...etc.
-- Fast response: Max. 3ms
-- Identify object colors: According to the colors' reflectivity and absorptivity, the sensors detect the light that the object reflected and identify the colors.
-- High precision: Precise electron circuit, can detect tiny objects with accurate position.
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