PololuPololu· Sensors
QTR-MD-03A Reflectance Sensor Array: 3-Channel, 8mm Pitch, Analog Output
Manufacturer part no. 4243
$4.25≈ 3.74 €
Manufacturer part no. 4243
Listed by Pololu at €3.74. Delivered to France, including shipping, VAT and any customs duty, it comes to about €34.49. Prices last checked on 2026-10-01.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
| Item | €3.74 |
|---|---|
| Shipping | €25.00 |
| VAT (20%) | €5.75 |
| Total delivered | €34.49 |
Estimate for a single item delivered to mainland France, shipped from outside the EU: customs duty and clearance fees may apply and are charged by the carrier.
| Qty | Unit price | Saving |
|---|---|---|
| ≥ 1 | $4.25 | |
| ≥ 5 | $3.91 | −8 % |
| ≥ 25 | $3.60 | −15 % |
| Current | 3 A |
| Voltage max. | 5.5 V |
| Voltage min. | 2.9 V |
| Weight | 1.1 g |
| Led current | 30 mA |
| Maximum current draw | 62 mA |
| Maximum range | 30 mm |
| Optimal range | 5 mm |
| Peak wavelength | 940 nm |
| Sensor count | 3 |
| Sensor pitch | 8 mm |
| Other pcb markings | 0J11361 |
| Output type | A (analog voltages) |
| Pcb dev codes | irs25a |
This array of IR LED/phototransistor pairs is great for precisely identifying changes in reflectance (like line detection). It operates from 2.9 V to 5.5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high-reflectance objects are generally detectable out to around 30 mm. This version features the traditional-style QTR sensors without lenses.
Semantically close products available for less — check the specs match your need.
| Sensor type | QTR |
| Size | 21.0 × 20.0 × 2.5 mm |
