--- title: OptoBlog | Jean Femia (24) description: Jean Femia writes about technical subjects and has focused on automation and control systems for more than 15 years. She likes learning about technology and taking corners in her Honda S2000. (24) --- - [Log in](https://www.opto22.com/logon?returnurl=%2f) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us) [![Opto 22 Logo](https://blog.opto22.com/hubfs/opto22_lightsilvergradient_800px.png "Opto 22 Logo")](https://www.opto22.com) - [Products](https://www.opto22.com/products) - [What Do You Want to Do?](https://www.opto22.com/products/what-do-you-want-to-do) - [groov RIO](https://www.opto22.com/products/groov-rio) - [groov EPIC System](https://www.opto22.com/products/groov-epic-system) - [Case Studies](https://www.opto22.com/products/groov-case-studies) - [Product Selector](https://www.opto22.com/products/product-selector) - [Product Families](https://www.opto22.com/products/product-families) - [IIoT System Architecture](https://www.opto22.com/support/resources-tools/demos/groov-epic-groov-rio-architecture) - [MQTT Resources](https://www.opto22.com/products/mqtt-resources) - 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She likes learning about technology and taking corners in her Honda S2000. Find me on: ### Recent Posts ## [OptoNews: Free lunch and plenty of tech](https://blog.opto22.com/optoblog/optonews-allied-mobile-tech-day) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Apr 15, 2015, 5:16:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoNews/logo_allied.png)](https://blog.opto22.com/optoblog/optonews-allied-mobile-tech-day) If you're near Mobile, Alabama, or the Stennis Space Center in Mississippi, join us next week for the 3rd annual **Allied Electronics Mobile Technology Day**. You'll see some 25 Allied suppliers at the Expo demonstrating the latest tech products and ready to answer your questions. Be sure to look for Opto 22's **Dan White**. Dan will be there to show you how easy it is to build your own mobile app to monitor and control Modbus/TCP devices, OPC UA systems and equipment, and of course Opto 22 SNAP PAC controllers.  [Read More](https://blog.opto22.com/optoblog/optonews-allied-mobile-tech-day) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-allied-mobile-tech-day#comments-listing) Topics: [optonews](https://blog.opto22.com/optoblog/topic/optonews), [Events & conferences](https://blog.opto22.com/optoblog/topic/events-conferences), [OptoNews 2015-04-15](https://blog.opto22.com/optoblog/topic/optonews-2015-04-15) ## [OptoNews: Tech tip - Just 2 wires to your dry contact switch](https://blog.opto22.com/optoblog/optonews-tech-tip-2-wires-to-switch) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Apr 15, 2015, 5:15:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoNews/sw_module_wiring_592x478.png)](https://blog.opto22.com/optoblog/optonews-tech-tip-2-wires-to-switch) Say you've got a dry contact switch you want to monitor so you know when it's closed. Could be a level sensor or pressure indicator, a magnetic reed switch or snap-action micro switch, or maybe a relay contact. There are lots of ways you could do that, but often the best way is to use a [SNAP-IDC5-SW digital input module](http://www.opto22.com/site/pr_details.aspx?cid=4&item=SNAP-IDC5-SW). Why? - It supplies 15 volts of power to an external dry contact switch. - You only need 2 wires to connect the switch to the module. - You can monitor 4 switches from 1 module. Ben Orchard raves about this module in his recent [blog post on monitoring water usage](https://blog.opto22.com/optoblog/visualizing-water-usage-with-groov), and with good reason: it makes life easier by saving wiring time and complexity. [Read More](https://blog.opto22.com/optoblog/optonews-tech-tip-2-wires-to-switch) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-tech-tip-2-wires-to-switch#comments-listing) Topics: [Remote monitoring](https://blog.opto22.com/optoblog/topic/remote-monitoring), [Tips](https://blog.opto22.com/optoblog/topic/tips), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2015-04-15](https://blog.opto22.com/optoblog/topic/optonews-2015-04-15) ## [OptoNews: New PAC Project release - controller hostnames, legacy support](https://blog.opto22.com/optoblog/optonews-hostnames-pac-project) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Apr 1, 2015, 5:39:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoNews/PACPROJECTBAS_p_450.png)](https://blog.opto22.com/optoblog/optonews-hostnames-pac-project) You'll get three great new features (and more) in our latest [PAC Project](http://www.opto22.com/site/pr_details.aspx?cid=1&item=PACPROJECTBAS) release: - Use either a **hostname** or an IP address to identify your control engine (you'll really appreciate this feature if you have multiple controllers) - Upgrade **legacy systems** by replacing the SNAP processor on a B-series mounting rack with the new SNAP-PAC-R1-B. - Change the **unit type** on an I/O unit, for example if you replace a SNAP PAC brain with a rack-mounted controller, or an Ultimate I/O brain with a SNAP-PAC-R1-B. [Read More](https://blog.opto22.com/optoblog/optonews-hostnames-pac-project) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-hostnames-pac-project#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [New products](https://blog.opto22.com/optoblog/topic/new-products), [Migration](https://blog.opto22.com/optoblog/topic/migration), [OptoNews 2015-04-01](https://blog.opto22.com/optoblog/topic/optonews-2015-04-01) ## [OptoNews: New video - easier facility management](https://blog.opto22.com/optoblog/optonews-energy-pqube-groov) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Apr 1, 2015, 5:38:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoNews/mobile_modbustcp_pqube_464x261.png)](https://blog.opto22.com/optoblog/optonews-energy-pqube-groov) Every application is different. But some things are similar: - You have to **monitor and control** equipment. - You don't have enough **time** in your workday. - Your **budget** is seldom enough for what you have to do. Watch the video and see how [*groov*](http://groov.com/) can help you save time and money in facility management. A *groov* mobile interface lets you keep moving while you monitor systems and equipment.  [Read More](https://blog.opto22.com/optoblog/optonews-energy-pqube-groov) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-energy-pqube-groov#comments-listing) Topics: [Energy management](https://blog.opto22.com/optoblog/topic/energy-management), [Videos](https://blog.opto22.com/optoblog/topic/videos), [groov](https://blog.opto22.com/optoblog/topic/groov), [Internet of Things](https://blog.opto22.com/optoblog/topic/internet-of-things), [Aggregates & concrete](https://blog.opto22.com/optoblog/topic/aggregates-amp-concrete), [Remote monitoring](https://blog.opto22.com/optoblog/topic/remote-monitoring), [IoT](https://blog.opto22.com/optoblog/topic/iot), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2015-04-01](https://blog.opto22.com/optoblog/topic/optonews-2015-04-01) ## [OptoNews: System integrators at CSIA 2015](https://blog.opto22.com/optoblog/optonews-csia-2015) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Apr 1, 2015, 5:33:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoNews/csia_2015.jpg)](https://blog.opto22.com/optoblog/optonews-csia-2015) Join us for the [CSIA Executive Conference](http://csiaexecutiveconference.org/), April 29 through May 3 in Washington, D.C. At this annual conference you'll get practical workshops on every aspect of a system integrator's business. Plus you can network with other integrators and explore at the Expo, where over 60 industry suppliers, manufacturers, and service providers will demonstrate the latest in automation. [Read More](https://blog.opto22.com/optoblog/optonews-csia-2015) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-csia-2015#comments-listing) Topics: [groov](https://blog.opto22.com/optoblog/topic/groov), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2015-04-01](https://blog.opto22.com/optoblog/topic/optonews-2015-04-01), [Events & conferences](https://blog.opto22.com/optoblog/topic/events-conferences) ## [OptoNews Tech tip: A mobile interface for... Optomux?](https://blog.opto22.com/optoblog/optonews-tip-mobile-interface-optomux) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Apr 1, 2015, 5:33:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/OptoNews/groov_your_optomux_464x261.png)](https://blog.opto22.com/optoblog/optonews-tip-mobile-interface-optomux) And the answer is: YES I know it sounds like an April Fool's joke, but it's really true: you can build a *groov* mobile interface for your older Optomux system. So you can monitor and control it from your smartphone or tablet.  It works in spite of the fact that Optomux has been around [since 1982](http://www.opto22.com/site/history.aspx), while [*groov*](http://groov.com/) is all about today. [Read More](https://blog.opto22.com/optoblog/optonews-tip-mobile-interface-optomux) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/optonews-tip-mobile-interface-optomux#comments-listing) Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [groov](https://blog.opto22.com/optoblog/topic/groov), [Tips](https://blog.opto22.com/optoblog/topic/tips), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [Migration](https://blog.opto22.com/optoblog/topic/migration), [OptoNews 2015-04-01](https://blog.opto22.com/optoblog/topic/optonews-2015-04-01) ## [OptoNews: Behind the scenes with James Cameron's Deepsea Challenger](https://blog.opto22.com/optoblog/behind-deepsea-challenge) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Mar 18, 2015, 4:31:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hs-fs/file-2557906251-jpg/blog-files/bens_blog/deepsea/benorchard-blog-4.jpg)](https://blog.opto22.com/optoblog/behind-deepsea-challenge) A new series of blog posts by Opto 22 Application Engineer [Ben Orchard](https://blog.opto22.com/optoblog/ben-first-blog-entry) gives you a front-row seat. Remember filmmaker and explorer [James Cameron's dive](http://www.deepseachallenge.com/) to the deepest part of the ocean, the Mariana Trench, just three years ago?  Ben spent 4 months with the Deepsea Challenger team, in Australia, Guam, and at the Trench. [Read More](https://blog.opto22.com/optoblog/behind-deepsea-challenge) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/behind-deepsea-challenge#comments-listing) Topics: [Insider](https://blog.opto22.com/optoblog/topic/insider), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [Deepsea Challenge](https://blog.opto22.com/optoblog/topic/deepsea-challenge), [OptoNews 2015-03-18](https://blog.opto22.com/optoblog/topic/optonews-2015-03-18) ## [OptoNews: Tech tip - Build your I/O in the Configurator](https://blog.opto22.com/optoblog/build-io-in-configurator) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Mar 18, 2015, 4:30:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hs-fs/file-2640335435-png/OptoNews/configurator_unit_302x400.png)](https://blog.opto22.com/optoblog/build-io-in-configurator) Today's tech tip is for anyone spec'ing new I/O for your system. It's a "hidden gem" on our website: the [SNAP I/O Configurator](http://www.opto22.com/site/fd_snappacconfigurator.aspx). This fun tool helps you build an I/O unit—mounting rack, I/O processor, and SNAP I/O modules. Pick a rack-mounted controller or brain for I/O processing. There it is, on the rack. Need a Factory Mutual approved, channel-to-channel isolated, digital input for DC voltage? Piece of cake. Check the boxes and choose the one you want. Add all the analog, digital, and serial modules you need. If the rack is too large or too small, just click to change it.  [Read More](https://blog.opto22.com/optoblog/build-io-in-configurator) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/build-io-in-configurator#comments-listing) Topics: [Tips](https://blog.opto22.com/optoblog/topic/tips), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2015-03-18](https://blog.opto22.com/optoblog/topic/optonews-2015-03-18) ## [OptoNews: Integrate your BACnet system with SNAP PAC](https://blog.opto22.com/optoblog/bacnet-integration-kit) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Mar 18, 2015, 4:30:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hs-fs/file-2631041798-png/OptoNews/bacnet_logo_464x94.png)](https://blog.opto22.com/optoblog/bacnet-integration-kit) If your building automation system uses BACnet—and many do—you can integrate it with your SNAP PAC System using our free BACnet Integration Kit for PAC Project. We've just updated this integration kit to include: [Read More](https://blog.opto22.com/optoblog/bacnet-integration-kit) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/bacnet-integration-kit#comments-listing) Topics: [Energy management](https://blog.opto22.com/optoblog/topic/energy-management), [Updates](https://blog.opto22.com/optoblog/topic/updates), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2015-03-18](https://blog.opto22.com/optoblog/topic/optonews-2015-03-18) ## [OptoNews: Aging wind farms join the 21st Century](https://blog.opto22.com/optoblog/aging-wind-farms-join-21st-century) Posted by [Jean Femia](https://blog.opto22.com/optoblog/author/jean-femia) on Mar 18, 2015, 4:30:00 PM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hs-fs/file-2612284166-png/OptoNews/wind_farm_400x267.png)](https://blog.opto22.com/optoblog/aging-wind-farms-join-21st-century) Older wind farms still produce clean energy, but many weren't built for modern monitoring and control. This lack of remote visibility causes problems for utility companies and other owners, who must immediately respond when regulators call for changes in production. That's because the electrical grid has to be a Goldilocks kind of system: not too much electricity, not too little. It has to be just right. [Read More](https://blog.opto22.com/optoblog/aging-wind-farms-join-21st-century) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/aging-wind-farms-join-21st-century#comments-listing) Topics: [Energy management](https://blog.opto22.com/optoblog/topic/energy-management), [groov](https://blog.opto22.com/optoblog/topic/groov), [Remote monitoring](https://blog.opto22.com/optoblog/topic/remote-monitoring), [optonews](https://blog.opto22.com/optoblog/topic/optonews), [OptoNews 2015-03-18](https://blog.opto22.com/optoblog/topic/optonews-2015-03-18) [Previous](https://blog.opto22.com/optoblog/author/jean-femia/page/23) [All posts](https://blog.opto22.com/optoblog/all) [Next](https://blog.opto22.com/optoblog/author/jean-femia/page/25) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [groov EPIC (509)](https://blog.opto22.com/optoblog/topic/groov-epic) - [groov RIO (304)](https://blog.opto22.com/optoblog/topic/groov-rio) - [optonews (218)](https://blog.opto22.com/optoblog/topic/optonews) - 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