SR21-IR Datalogic Label Sensor
Datalogic SR21-IR Fork Label Sensor
Infrared fork (slot) sensor for label detection — 2 mm slot, 50 mm depth, 0.5 mm minimum object, 25 kHz, NPN + PNP output on an M8 connector.
Product Overview
The Datalogic SR21-IR (order code 953151070) is a fork label sensor from the SR21 series, now produced under the Datasensing brand. Infrared fork (slot) sensor for label detection — 2 mm slot, 50 mm depth, 0.5 mm minimum object, 25 kHz, NPN + PNP output on an M8 connector.
SR21-IR Technical Specifications
| Brand | Datalogic (Datasensing) |
|---|---|
| Part Number / MPN | SR21-IR |
| Order Code | 953151070 |
| Sensor Type | Photoelectric fork / label sensor (SR21 series) |
| Light Emission | Infrared LED |
| Fork Slot | 2 mm wide × 50 mm deep |
| Minimum Detectable Object | 0.5 mm |
| Adjustment | Teach-in |
| Output | NPN + PNP, Light/Dark selectable |
| Switching Frequency | 25 kHz (response 20 µs) |
| Supply Voltage | 10–30 V DC, ≤ 55 mA |
| Connection | M8 4-pin plug |
| Housing | Metal (Zamak), 20 × 26 × 90 mm |
| Protection | IP65 |
| Operating Temperature | −20 °C to +60 °C |
| Approvals | CE, cULus |
Specifications from the Datasensing product data for SR21-IR. Please check the datasheet for wiring and response curves.
Typical Applications
- Label gap detection on labelling machines
- Opaque label detection on paper or film backing
- Label counting and dispensing control
- Edge and hole detection on thin webs
Why Buy SR21-IR from Industrypapa?
SR21-IR Supplier in India
Industrypapa supplies the Datalogic SR21-IR across India, including:
Frequently Asked Questions
Q1. What is the price of Datalogic SR21-IR in India?
The SR21-IR is listed at ₹8,690 on Industrypapa. For bulk quantities, contact us for a quote.
Q2. What is SR21-IR used for?
Detecting labels (and the gaps between them) on a backing web in labelling and packaging machines.
Q3. What is the difference between SR21-IR and SR21-RG?
SR21-IR uses infrared light for label detection; SR21-RG uses red/green light for print marks on transparent films.
Q4. What output does SR21-IR have?
Both NPN and PNP outputs (4-wire), Light/Dark selectable, on an M8 4-pin connector.
Q5. Is SR21-IR the same product after the Datalogic → Datasensing rebrand?
Yes. Datalogic's sensor business now operates as Datasensing; the part number SR21-IR (order code 953151070) and specifications are unchanged.
Need help selecting the right sensor?
Talk to our automation engineers — we'll help you pick the correct Datalogic / Datasensing part for your application.
Get a Quote / Talk to Engineer →Related Products
