PololuPololu· Sensors

QTR-MD-05A Reflectance Sensor Array: 5-Channel, 8mm Pitch, Analog Output

Name: QTR-MD-05A Reflectance Sensor Array: 5-Channel, 8mm Pitch, Analog Output
Brand: Pololu
Price: 7.02 USD
Availability: InStock

Manufacturer part no. 4245

$7.02≈ 6.21 €

Price summary

Listed by Pololu at €6.21. Delivered to France, including shipping, VAT and any customs duty, it comes to about €37.45. Prices last checked on 2026-10-02.

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

In stock — 111 units

origin USA
RoHS3

View at seller ↗

Estimated landed cost

Landed cost breakdown
Item	€6.21
Shipping	€25.00
VAT (20%)	€6.24
Total delivered	€37.45

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	Saving
≥ 1	$7.02
≥ 5	$6.46	−8 %
≥ 25	$5.94	−15 %

Datasheets & documents

Specifications (automatically extracted)

Electrical

Current	5 A
Voltage max.	5.5 V
Voltage min.	2.9 V

Mechanical

Weight

1.9 g

Other characteristics

Led current	30 mA
Maximum current draw	93 mA
Maximum range	40 mm
Optimal range	5 mm
Peak wavelength	940 nm
Sensor count	5
Sensor pitch	8 mm
Other pcb markings	0J11466
Output type	A (analog voltages)
Pcb dev codes	irs29a

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. 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 40 mm. This version features the traditional-style QTR sensors without lenses.