ESM12005U2Q2-3 Measuring Light Curtain accuracy 5mm, 120 beam, detection height 595mm

SKU: ESM12005U2Q2-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12005
  • Detection accuracy (mm): 5
  • Beams (n): 120
  • Beam space (mm): 5
  • Detection Height (mm): 595
  • Total height (mm): 638
  • Output: 0~10V analog
  • Brackets: End cover mounting
  • Sensing distance: 0.1-3m

ESM12005U2Q2-5 Measuring Light Curtain accuracy 5mm, 120 beam, detection height 595mm

SKU: ESM12005U2Q2-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12005
  • Detection accuracy (mm): 5
  • Beams (n): 120
  • Beam space (mm): 5
  • Detection Height (mm): 595
  • Total height (mm): 638
  • Output: 0~10V analog
  • Brackets: End cover mounting
  • Sensing distance: 0.1-5m

ESM12010IL-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010IL-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: 4~20mA analog
  • Brackets: Side mounting
  • Sensing distance: 0.1-1m

ESM12010IL-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010IL-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: 4~20mA analog
  • Brackets: Side mounting
  • Sensing distance: 0.1-3m

ESM12010IL-5 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010IL-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: 4~20mA analog
  • Brackets: Side mounting
  • Sensing distance: 0.1-5m

ESM12010IQ2-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010IQ2-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: 4~20mA analog
  • Brackets: End cover mounting
  • Sensing distance: 0.1-1m

ESM12010IQ2-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010IQ2-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: 4~20mA analog
  • Brackets: End cover mounting
  • Sensing distance: 0.1-3m

ESM12010IQ2-5 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010IQ2-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: 4~20mA analog
  • Brackets: End cover mounting
  • Sensing distance: 0.1-5m

ESM12010NL-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010NL-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: NPN*2
  • Brackets: Side mounting
  • Sensing distance: 0.1-1m

ESM12010NL-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010NL-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: NPN*2
  • Brackets: Side mounting
  • Sensing distance: 0.1-3m

ESM12010NL-5 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010NL-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: NPN*2
  • Brackets: Side mounting
  • Sensing distance: 0.1-5m

ESM12010NQ2-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010NQ2-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: NPN*2
  • Brackets: End cover mounting
  • Sensing distance: 0.1-1m

ESM12010NQ2-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010NQ2-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: NPN*2
  • Brackets: End cover mounting
  • Sensing distance: 0.1-3m

ESM12010NQ2-5 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010NQ2-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: NPN*2
  • Brackets: End cover mounting
  • Sensing distance: 0.1-5m

ESM12010PL-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PL-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: PNP*2
  • Brackets: Side mounting
  • Sensing distance: 0.1-1m

ESM12010PL-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PL-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: PNP*2
  • Brackets: Side mounting
  • Sensing distance: 0.1-3m

ESM12010PL-5 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PL-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: PNP*2
  • Brackets: Side mounting
  • Sensing distance: 0.1-5m

ESM12010PPL-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PPL-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: Pulse transmission
  • Brackets: Side mounting
  • Sensing distance: 0.1-1m

ESM12010PPL-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PPL-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: Pulse transmission
  • Brackets: Side mounting
  • Sensing distance: 0.1-3m

ESM12010PPQ2-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PPQ2-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: Pulse transmission
  • Brackets: End cover mounting
  • Sensing distance: 0.1-1m

ESM12010PPQ2-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PPQ2-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: Pulse transmission
  • Brackets: End cover mounting
  • Sensing distance: 0.1-3m

ESM12010PQ2-1 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PQ2-1

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: PNP*2
  • Brackets: End cover mounting
  • Sensing distance: 0.1-1m

ESM12010PQ2-3 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PQ2-3

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: PNP*2
  • Brackets: End cover mounting
  • Sensing distance: 0.1-3m

ESM12010PQ2-5 Measuring Light Curtain accuracy 10mm, 120 beam, detection height 1190mm

SKU: ESM12010PQ2-5

Product Feature:

  • Wide voltage power supply: the operating voltage is DC12-30V.
  • Detection accuracy: the detection accuracy can reach 2.5mm at most.
  • Long sensing distance: 2.5mm spacing can reach more than 3m sensing distance, 5mm and 10mm spacing can reach more than 5m sensing distance.
  • Avariety of data output: light spot blocking beam, light spot status, edge shading position.
  • Standard protocol: Modbus-RTU communication protocol is adopted.
  • Visual display of operation status: adopt digital tube and indicator light to display curtain working status.
  • Small appearance size:32mm*30mm sectional dimension.

Specifications:

  • Series: ESM12010
  • Detection accuracy (mm): 10
  • Beams (n): 120
  • Beam space (mm): 10
  • Detection Height (mm): 1190
  • Total height (mm): 1238
  • Output: PNP*2
  • Brackets: End cover mounting
  • Sensing distance: 0.1-5m