We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular sensor with red laser spot and M12 connector

Sick

Sick KT3L-N3216 Contrast Sensor NPN 40mm 10-30V DC

SKU CH-5M0S-KX0RS

Contrast sensor with laser teach-in, NPN output, 40 mm sensing distance and IP67 housing for 10-30 V DC supply

  • Precise contrast detection at 40 mm with ±20 mm tolerance
  • Laser class II red 655 nm light source for reliable sensing
  • NPN switching output up to 100 mA at 1.5 kHz frequency
  • Teach-in button enables static 2-point adjustment in 25 ms
  • IP67 ABS housing withstands harsh environments at 11 g weight

Sick KT3L-N3216 Contrast Sensor

The Sick KT3L-N3216 is a rectangular contrast sensor with NPN switching output designed for industrial detection tasks. It operates on a 10 V DC to 30 V DC supply and draws less than 35 mA. The housing measures 12 mm by 40 mm by 22 mm and weighs 11 g.

40 mm sensing with laser teach-in

The sensor uses a red laser at 655 nm producing a 1 mm by 2 mm vertical light spot. Operating distance ranges from 20 mm to 60 mm with a ± 20 mm tolerance on the 40 mm nominal sensing distance. A teach-in button enables static 2-point teach-in and retention time is 25 ms with non-volatile memory.

IP67 ABS housing with M12 connector

The ABS housing provides IP67 enclosure rating and protection class II. Circuit protection covers reverse polarity, output short-circuit and interference pulse suppression. Connection is via a male M12 4-pin connector. Switching frequency reaches 1.5 kHz with a 400 µs response time and maximum output current of 100 mA.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $242.99
Pricier than about 83% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameSICK
Model nameSICK KT3L-N3216

Questions about this item

Should I choose the NPN output version or is there a PNP alternative for this sensor?

This specific model provides an NPN switching output rated at 100 mA maximum; a PNP version would carry a different part number.

How does the 1.5 kHz switching frequency perform when the sensor is mounted on a production line?

The sensor switches at up to 1.5 kHz with a 400 µs response time, allowing reliable detection of contrast marks on materials moving at typical line speeds.

What does the M12 4-pin connector limit in terms of wiring and voltage range?

The M12 4-pin connector carries the 10-30 V DC supply and NPN output, supporting the specified 35 mA current draw and 100 mA load.

More in Electrical Trade Tools & Kits

Similar items