--- title: Compare PMI's 2SX with the Guardian description: See how the Guardian can help you with your Power Quality needs. image: https://info.powermonitors.com/hubfs/PMI_Website/getting%20started%20icons/png/Guardian.png --- [![PMI Logo Tools you need people you Trust](https://info.powermonitors.com/hubfs/PMI_Website/logo.svg)](https://powermonitors.com/) - [Home](https://powermonitors.com) - [Products](https://powermonitors.com/products) - Library - Videos - [All](https://powermonitors.com/videos/) - [Bolt Quality Tests](https://powermonitors.com/videos/?video_search=&video_topic=bolt-quality-tests) - [Promotional Videos](https://powermonitors.com/videos/?video_search=&video_topic=promotional-videos) - [Support Videos](https://powermonitors.com/videos/?video_search=&video_topic=support) - [Power Quality Decoded](https://powermonitors.com/videos/?video_search=&video_topic=white-paper-walkthroughs) - White Papers - [All](https://powermonitors.com/whitepapers/) - [Artificial Intelligence](https://powermonitors.com/whitepapers/?whitepaper_search=Merlin&whitepaper_topic=) - [Case Studies](https://powermonitors.com/whitepapers/?whitepaper_topic=case-studies) - Communications - [All Communications](https://powermonitors.com/whitepapers/?whitepaper_topic=communications) - [Cellular Communications](https://powermonitors.com/whitepapers/?whitepaper_topic=cellular-communications) - [General Communications](https://powermonitors.com/whitepapers/?whitepaper_topic=general-communications) - [Distributed Generation](https://powermonitors.com/whitepapers/?whitepaper_topic=distributed-generation) - Products - [All Products](https://powermonitors.com/whitepapers/?whitepaper_topic=products) - [Boomerang](https://powermonitors.com/whitepapers/?whitepaper_topic=boomerang) - [Boomerang SCADA](https://powermonitors.com/whitepapers/?whitepaper_search=Boomerang+Scada&whitepaper_topic=) - [Box Recorder](https://powermonitors.com/whitepapers/?whitepaper_topic=box-recorder) - [Canvass](https://powermonitors.com/whitepapers/?whitepaper_topic=canvass) - [Eagle](https://powermonitors.com/whitepapers/?whitepaper_topic=eagle) - [Flex CT](https://powermonitors.com/whitepapers/?whitepaper_topic=flex-ct) - [Guardian](https://powermonitors.com/whitepapers/?whitepaper_topic=guardian) - [Merlin™](https://powermonitors.com/whitepapers/?whitepaper_search=Merlin&whitepaper_topic=) - [Meter Sockets](https://powermonitors.com/whitepapers/?whitepaper_topic=meter-sockets) - [PQ Canvass](https://powermonitors.com/whitepapers/?whitepaper_topic=pq-canvass) - [ProVision](https://powermonitors.com/whitepapers/?whitepaper_topic=provision) - [Revolution](https://powermonitors.com/whitepapers/?whitepaper_topic=revolution) - [TLAR](https://powermonitors.com/whitepapers/?whitepaper_topic=tlar) - [Using PMI Recorders](https://powermonitors.com/whitepapers/?whitepaper_topic=using-pmi-recorders) - [Harmonics](https://powermonitors.com/whitepapers/?whitepaper_topic=harmonics) - [IEEE Standards](https://powermonitors.com/whitepapers/?whitepaper_topic=ieee-standards) - Power Quality - [All Power Quality](https://powermonitors.com/whitepapers/?whitepaper_topic=power-quality) - [Analyzing Waveforms](https://powermonitors.com/whitepapers/?whitepaper_topic=analyzing-waveforms) - [Flicker](https://powermonitors.com/whitepapers/?whitepaper_topic=flicker) - [PQ Data Analysis](https://powermonitors.com/whitepapers/?whitepaper_topic=pq-data-analysis) - [PQ Theory](https://powermonitors.com/whitepapers/?whitepaper_topic=pq-theory) - Voltage - [All Voltage](https://powermonitors.com/whitepapers/?whitepaper_topic=voltage) - [CVR](https://powermonitors.com/whitepapers/?whitepaper_topic=cvr) - [Voltage Sag](https://powermonitors.com/whitepapers/?whitepaper_topic=voltage-sag) - [Voltage Unbalance](https://powermonitors.com/whitepapers/?whitepaper_topic=voltage-unbalance) - Training - [All](https://info.powermonitors.com/training) - [PDH Eligible Classes](https://powermonitors.com/product-category/classes/) - [On-Site Training](https://powermonitors.com/on-site-training/) - [Online Webinars](https://info.powermonitors.com/no-cost-class-schedule) - [Support](https://powermonitors.com/support/) - Our Company - [About Us](https://powermonitors.com/about-pmi/) - [Contact](https://powermonitors.com/contact/) - [Join Our Team!](https://info.powermonitors.com/join-pmi) - [Receive our Newsletter](https://info.powermonitors.com/email-subscribe-page) - [PQ Resources](https://info.powermonitors.com/power-quality-resources) - [Power Quality Solutions](https://powermonitors.com/power-quality-solutions/) - [Who We Serve](https://powermonitors.com/sales-representatives/) - [Account](https://powermonitors.com/account/) - [Cart](https://powermonitors.com/cart/) | | Compare PMI Products! | | | --- | --- | --- | | | ![ivs-2sx](https://info.powermonitors.com/hs-fs/hubfs/Imported%20sitepage%20images/ivs-2sx.png?width=350&height=183&name=ivs-2sx.png) \*To be Discontinued as of 1/15/25\* | [![150917-CellGuardian-4 (1) (1)](https://info.powermonitors.com/hs-fs/hubfs/150917-CellGuardian-4%20(1)%20(1).png?width=266&height=242&name=150917-CellGuardian-4%20(1)%20(1).png)](https://powermonitors.com/product/bolt) | | | iVS-2SX+ $3,630 | Guardian Starting at $4,545 | | Size | 4.625" x 6.75" | 4.625" x 6.75" | | Channels | 2 Voltage / 2 Current | 2 Voltage / 2 Current | | Sampling Rate | 128 samples/cycle | 256 samples/cycle | | USB | ✓ | ✓ | | WiFi | ✗ | ✓ | | Cell | ✗ | ✓ | | ProVision | ✓ | ✓ | | Cloud Software | ✗ | PQ Canvass | | Memory | 2 MB | 16 MB (Standard) 128 MB up to 1 GB (Optional) | | IEEE Flicker | User-Defined IEEE Std. 141 | User-Defined IEEE Std. 141 IEEE 1453/IEC 61000-4-15 | | Harmonics | to the 31st | to the 51st | | Waveform Capture Voltage & Current Threshold | ✓ | ✓ | | Waveform Capture Periodic Capture Waveshape Event Cross Triggers | ✗ | ✓ | | CBEMA/ITIC Recording | ✗ | ✓ | | | [![Buy Now](https://no-cache.hubspot.com/cta/default/446633/c24eff6e-3dda-4b79-a5bb-d9a58ec0cce9.png)](https://cta-redirect.hubspot.com/cta/redirect/446633/c24eff6e-3dda-4b79-a5bb-d9a58ec0cce9) | [![Buy Now](https://no-cache.hubspot.com/cta/default/446633/e47b0461-90a8-41cc-bcf6-76e66411eeb6.png)](https://cta-redirect.hubspot.com/cta/redirect/446633/e47b0461-90a8-41cc-bcf6-76e66411eeb6) |   Power Monitors, Inc. is an industry-leading product design and manufacturing firm based in Mt. Crawford, Virginia. PMI® strives to solve power quality problems by listening to our customers and working with them to design and manufacture products. Total customer satisfaction is the primary goal of all PMI® staff. Please browse our site or call us to learn more about PMI® and how we can help meet your power monitoring needs. 800 N Main St Mt Crawford, VA 22841 | Toll Free 800.296.4120 | Fax 540.432.9430 | © Power Monitors, Inc.