4m Garage Sliding Swing Gate & Door Opener Reflective Infrared Photocell / Infrared Sensor Photo Eye Beam

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.