Sensor DS18B20 Waterproof Digital Thermal Probe

The detector uses DS18B20 temperature sensor chip ,each pin of which is separated by heat shrinkable tube,to prevent short circuit and internal sealing glue,water proof and moisture proof.

  • High quality stainless steel tube package,water proof,moisture proof and rust proof
  • Each detector is single packaged after strict test.
  • 3.0V ~ 5.5V power supply
  • 9-12 bits adjustable resolution
  • Temperature-detect range wide -55℃ ~ +125℃
  • Need no external components,unique single-bus interface

Type : MQ-2

(Used in homes and factories, gas leakage monitoring devices, suitable for the detection of liquefied petroleum gas, butane, propane, methane, alcohol, hydrogen gas, smoke, etc..)
  • Gas: smoke
  • Detection range: 300 to 10000ppmm
  • The characteristics gas: 1000ppmm, isobutane
  • Sensitivity: R in air / Rin, typical gas ≥ 5
  • Sensing Resistance: 1KΩ 50ppm toluene to 20KΩ in.
  • Response time: ≤ 10s
  • Recovery time: ≤ 30s
  • Heat resistance: 31Ω ± 3Ω
  • Heating current: ≤ 180mA
  • Heating voltage: 5.0V ± 0.2V
  • Heating power: ≤ 900mW
  • Measuring voltage: ≤ 24V
  • Working conditions of ambient temperature: -20 ℃ ~ +55 ℃
  • Humidity: ≤ 95% RH
  • Environmental oxygen content: 21%
  • Storage conditions Temperature: -20 ° C to +70 ° C
  • Humidity: ≤ 70% RH

Documents:

Manual técnico MQ-2
Ejemplo de conexiones.

Precio: $7.08

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