Sensors Frequently Asked Questions
Sensors Frequently Asked Questions
| Question | What is the difference between 2-wire, 3-wire, and 4-wire sensors? |
| Answer | 2-Wire Sensors: Allows either NPN or PNP output (Don’t have to select!) 3-Wire Sensors: Most commonly used. When ordering, must choose an NPN or PNP output 4-Wire Sensors: Allows either NO or NC output (Don’t have to select!) Must choose NPN or PNP output when ordering |
FAQ Subcategory:
This item was last updated on 11-30-2007
Document ID: 462
The information provided in the AutomationDirect knowledge base is provided "as is" without warranty of any kind. AutomationDirect disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall AutomationDirect or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if AutomationDirect or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion of limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.