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I like the product and how easy is it to use them and making a tight grip on the wires
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SmartElex BS312 PIR Motion Sensor
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The SmartElex BS312 PIR Motion Sensor is a compact passive infrared sensor designed to detect human motion by sensing changes in infrared radiation. It helps systems respond only when movement is present, reducing unnecessary power usage and improving efficiency. This sensor is suitable for students, makers, engineers, educators, and startups who are building electronics projects that require reliable motion detection in a small, low-power form factor.
This PIR motion sensor is ideal for robotics, IoT devices, security systems, and automation projects, especially those that run on batteries or need low standby power consumption. It can be easily interfaced with popular platforms such as Arduino, Raspberry Pi, and ESP32, making integration quick and straightforward. Common use cases include motion-activated lighting, smart alarms, occupancy detection, and compact IoT monitoring solutions where dependable performance and simple integration are essential.
| Item Type | Motion Sensor |
| Model | PIR Motion Sensor |
| Model No. | BS312 |
| Voltage Rating (V) | 2.2 to 3.7 |
| Sensor Type | Pyroelectric PIR |
| Output Signal | High / Low Digital Output |
| Sensing Distance | Up to 12 m (with SB-F-02 lens) |
| Sensing Angle | 120° (horizontal) |
| Power Consumption | <12 µA |
| Window Size | 3 × 4 mm |
| Length (mm) | 28 |
| Width (mm) | 20 |
| Height (mm) | 11 |
This item is covered with a supplier warranty of 1 year from the time of delivery against manufacturing defects only.
In case of manufacturing defects or issues, we will replace the part after warranty confirmation by our technical team, but we won’t offer refunds or replace the entire product.