ASI Automation Systems Interconnect, Inc.
Automation, Control and Power Products
Convenient and Easy,
with Proven Savings of 20% to 50%

Find It Here
Home > Sensors for Packaging Applications > Slot Sensors

Sensors: Photoelectric, Inductive, Capacitive, Magnetic

Slot Sensors
For Labeling and Packaging

Slot Sensor Features:

  • High 25kHz switching frequency
  • IR or red/green light models
  • Detection of semi-transparent labels
  • Detection of register marks on transparent
  • 4 wire antivalent NPN and PNP output
View Associated Products Below to Complete Your Project
Catalog No. Description 
Slot Sensor,
PNP & NPN Output
  • High 25kHz switching frequency
  • Low 20µs response time
  • Ideal for label or hole detection on continuous surface
953151070 Type SR21-IR, Slot sensor, PNP & NPN output, 2mm slot width, infrared emission 
List Price
$178.28 ea
Ships Stock - 4 weeks
Slot Sensor,
PNP & NPN Output
  • High 25kHz switching frequency
  • Low 20µs response time
  • Ideal for label or hole detection on continuous surface
953151080 Type SR21-RG, Slot sensor, PNP & NPN output, 2mm slot width, red/green emission 
List Price
$198.80 ea
Ships Stock - 4 weeks

Purchasers of ASI Slot Sensors Also Saved Time & Money With:

Sensor Terminal BlocksIf you use 3-wire sensors with terminal blocks for connections or if you have a new 3-wire sensor application you will be impressed with the ease of installation and cost savings of the ASI sensor blocks.  The ASI 3-wire sensor terminal blocks use a unique "Lock System" that eliminates having to buy and install additional jumper accessories which can be expensive and timely.  Everything you need is in the block.
Sensor Signal InverterThe most practical component that you will ever use if sensors are in your equipment.  You can easily convert from PNP to NPN or NPN to PNP so you are never stuck without a sensor to match your controller.  The best feature is the economical price!
Power SuppliesMost efficient power supply on the market. Available with outputs of 5 to 48 VDC. UL508 Listed. Meets CE and other international approvals. 5-year warranty.
Sensor CablesComplete line of sensor cables and connectors. 3 and 4-wire cables offered in both PVC and PUR. UL listed and available in 5, 10 and 15 meters.
Sensor Distribution BoxesAvailable with 4, 6 or 8 ports with either M8 or M12 size connectors. Learn how these boxes will reduce installation time and wiring cost.
Back to Top
Find Lower Prices
  • View Lower Internet Prices
  • Check Availability
  • Securely Place Orders cart
Email Newsletter
• New Product Information
• Technical News
• Special Offers
New Interactive
ASI Catalog
Order Your Free Catalog
Click now to display this product's available stock level.
Click now to add this product to your shopping cart.
ASI-EZ Website Searches
There are two kinds of search that you can do on the ASI website:

Products Search
Enter all or part of an ASI catalog number or enter one or more words that describe the product you need.

Competitive Part Cross Reference Search
Enter a part number from a company other than ASI.  This search will show all equivalent ASI products.
Use our quick login to get immediate access to our discounted web prices and product availability, as well as placing and monitoring orders through our secure online site.

If you haven't logged on before use the New Account link to the right to easily and securely set up a login id.
If you have not logged onto the site before click now to quickly, easily and securely set up an id for immediate access to product prices and availability.
Click now if you need us to send you your password in an email.
Shopping Cart Preview

Call Toll-Free:
 (877) 650 - 5160 
Already A Customer? Log On Here.
: remember my email for login later

New Customer? Start Here.
Create a new free account here: receive discount pricing, place orders, check availability and set up a credit account for P.O. ordering
New Login ID Setup:
Your Name:
All Fields Above Are Required