PololuPololu· Sensors
QTR-HD-01RC Reflectance Sensor: 1-Channel, 5mm Wide, RC Output
Manufacturer part no. 4101
$3.25≈ 2.86 €
Manufacturer part no. 4101
Listed by Pololu at €2.86. Delivered to France, including shipping, VAT and any customs duty, it comes to about €33.43. Prices last checked on 2026-09-29.
Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.
| Item | €2.86 |
|---|---|
| Shipping | €25.00 |
| VAT (20%) | €5.57 |
| Total delivered | €33.43 |
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 | $3.25 | |
| ≥ 5 | $2.99 | −8 % |
| ≥ 25 | $2.75 | −15 % |
| ≥ 100 | $2.53 | −22 % |
| Voltage max. | 5.5 V |
| Voltage min. | 2.9 V |
| Weight | 0.25 g |
| Led current | 30 mA |
| Maximum current draw | 32 mA |
| Maximum range | 30 mm |
| Optimal range | 5 mm |
| Peak wavelength | 940 nm |
| Sensor count | 1 |
| Other pcb markings | 0J11357 |
| Output type | RC (measurable by digital I/O) |
| Pcb dev codes | irs21a |
| Sensor type | QTR |
| Size | 5.0 × 20.0 × 3.9 mm |
This IR LED/phototransistor pair 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 a traditional-style QTR sensor without lenses.
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