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Smoke Detector Digital Sensor BM22S2021-1

US$ 5.20
In stock
Quantity
4
Product ID
BM22S2021-1
DESCRIPTION

The BM22S2021-1 is a smoke detector sensor with two channels (LED transmitters) to detect white smoke and black smoke. Each sensor has been calibrated at the factory. When the concentration of smoke exceeds the default calibration, the voltage output of the alarm pin (pin 5) changes from low level to high level (default). It is easy to make a gas detector by supplying power to this sensor and monitoring the alarm output pin.


Product information

Dimension: 37 x 37 x 83 mm
Net Weight: 14.7g


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PRODUCT FEATURES
  1. Operating voltage: 3.0V to 5.0V
  2. UART interface, 9600 baud rate
  3. Adjustable alarm threshold (you can set different thresholds for white smoke and black smoke)
  4. UART interface, 9600 baud rate
  5. Adjustable alarm status pin output level (active high or active low)
  6. Standby current < 15uA @3V (wake up every 8 seconds)
  7. Automatic fault detection
  8. Factory calibration, good consistency
PIN DESCRIPTION
Photoelectric-Smoke-Detector-Digital-Sensor-Holtek-pin-description
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