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The SmartElex BX404 PIR Motion Sensor by SmartElex is a value-for-money pir motion sensor module designed for everyday users. It features Item Type: PIR Motion Sensor and Model No. / Name: BX404.
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About This Product
The SmartElex BX404 PIR Motion Sensor by SmartElex is a value-for-money pir motion sensor module designed for everyday users. It delivers reliable performance at an accessible price.
Key Specifications
- Item Type: PIR Motion Sensor
- Model No. / Name: BX404
- Voltage Rating (V): 2.2 to 3.7 — works with standard household power
- Window Size: 4 × 4mm
- Sensing Angle: 120° (horizontal)
- Power Consumption: <11 µA
- Measurement Range: 12m — reliable connection even at a distance
- Length (mm): 37
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The BX404 PIR Motion Sensor is a smart, low-power digital passive infrared sensor designed for accurate human motion detection in IoT, automation, and security systems. It directly interfaces with up to two conventional PIR sensors via a high-impedance differential input, ensuring reliable detection with minimal interference.
The on-chip digital circuit processes PIR signals and provides stable digital outputs when motion is detected. Timing parameters can be set by connecting corresponding inputs to DC voltages, offering flexibility for different applications. With a 120° wide detection angle, 12-meter sensing range, and ultra-low static power consumption (<11µA), this sensor is ideal for energy-efficient smart devices.
Note: Refer to User Manual in the ATTACHMENTS section for more info. regd. the product.
Features:
- Compact and intelligent PIR motion detection module
- Interfaces directly with up to two PIR sensors
- Converts PIR signals into digital values on-chip
- Stable digital output when motion exceeds threshold
- Wide detection angle of 120°
- Long sensing distance up to 12m
- Low static power consumption <11µA
- Adjustable timing via DC voltage inputs
Package Includes:
1 x SmartElex BX404 PIR Motion Sensor








