# POLOLU QTR-HD-31RC REFLECTANCE SENSOR | Sensor: distance; reflective; 2.9?5.5VDC; digital; Ch: 31; HD

**Manufacturer:** POLOLU  
**MPN:** `QTR-HD-31RC REFLECTANCE SENSOR`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | POLOLU |
| Manufacturer name | POLOLU |
| Manufacturer | POLOLU |
| CategoryL1 | Robotics and Prototyping |
| CategoryL2 | Sensor Modules |
| CategoryL3 | Distance Sensors |
| Extra Product Name | POLOLU QTR-HD-31RC REFLECTANCE SENSOR \| Sensor: distance; reflective; 2.9?5.5VDC; digital; Ch: 31; HD |
| atoms | 1 |
| jsonUrlData | 72accd8531c7430d67b285db71a74b92. |
| jsonUrlData2 | 30d02cef0d51f0ffc87d |
| keywords | POLOLU, QTR-HD-31RC REFLECTANCE SENSOR, POLOLU-4131, Robotics and Prototyping, Sensor Modules, Distance Sensors |
| moq | 1 |
| MPN | QTR-HD-31RC REFLECTANCE SENSOR |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | POLOLU-4131 |
| snippet | POLOLU QTR-HD-31RC REFLECTANCE SENSOR \| Sensor: distance; reflective; 2.9?5.5VDC; digital; Ch: 31; H |
| Type of sensor | distance |
| Kind of sensor | reflective |
| Interface | digital |
| Number of channels | 31 |
| Board dimensions | 125x16.5mm |
| Number of digital outputs | 31 |
| Manufacturer series | HD |
| Information | product is not a working device, but only component |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| TME | POLOLU-4131 |  |  | None | 1 |

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Structured data: `/python/html6/product/500/205000000/205348000/part_--QTRHD31RCREFLECTANCESENSOR---POLOLU--a7a3a862a4.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp