PololuPololu· Sensors

QTR-HD-25A Reflectance Sensor Array: 25-Channel, 4mm Pitch, Analog Output

Name: QTR-HD-25A Reflectance Sensor Array: 25-Channel, 4mm Pitch, Analog Output
Brand: Pololu

Manufacturer part no. 4225

$30.09≈ 26.50 €

Price summary

Sold by 2 suppliers, from €26.50 to €33.09. The lowest listed price is Pololu at €26.50. Once shipping, VAT and customs duty are added, the cheapest delivered is RobotShop at about €40.99 — Pololu lands at about €61.80. Prices last checked on 2026-09-30.

Delivered cost is an estimate for a single item shipped to mainland France; the seller's checkout is authoritative.

In stock — 10 units

origin USA
RoHS3

View at seller ↗

Estimated landed cost

Landed cost breakdown
Item	€26.50
Shipping	€25.00
VAT (20%)	€10.30
Total delivered	€61.80

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.

Volume pricing

Qty	Unit price

2 offers for this product

Offers from the different sellers, sorted by price
Seller	Availability	Price	Seller link
PololuBest delivered cost	In stock	$30.09€31.80 incl. VAT	Visit ↗
RobotShop	Special order	€33.09€33.09 incl. VAT	Visit ↗

Prices compared incl. VAT: some sellers list ex-VAT trade prices, others VAT-inclusive retail prices. The badge marks the best estimated delivered cost, shipping and duties included — not always the first row.

Price history

2 price/stock records since 8/4/2026

Lowest 30.09 USDNow 30.09 USDHighest 30.09 USD

Specifications (automatically extracted)

Electrical

Current	25 A
Voltage max.	5.5 V
Voltage min.	2.9 V

Mechanical

Weight

6.6 g

Other characteristics

Led current	30 mA
Maximum current draw	405 mA
Maximum range	50 mm
Optimal range	5 mm
Peak wavelength	940 nm
Sensor count	25
Sensor pitch	4 mm
Other pcb markings	0J11373
Output type	A (analog voltages)
Pcb dev codes	irs45a

Description

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 and separate controls for the odd and even emitters. 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 50 mm. This version features the traditional-style QTR sensors without lenses.