{"product_id":"grundfos-cim-500-ciu-communication-modules","title":"Grundfos CIM 500 and CIU900 Communication Interface Modules","description":"\u003c!-- TABS --\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\n\u003cdiv class=\"gs-head\"\u003e\n\u003cdiv class=\"gs-eyebrow\"\u003eGrundfos · Communication Module\u003c\/div\u003e\n\u003cdiv class=\"gs-title\"\u003eCIM 500 and CIU900 \/ CIU901\u003c\/div\u003e\n\u003cdiv class=\"gs-sub\"\u003eEthernet communication for Grundfos pumps and booster systems: BMS protocols and Grundfos Remote Management over one RJ45 connection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-badges\"\u003e\n\u003cdiv class=\"gs-badge\"\u003eEthernet RJ45\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003eModbus TCP · BACnet IP\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003ePROFINET IO · EtherNet\/IP\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003eGrundfos Remote Management\u003c\/div\u003e\n\u003cdiv class=\"gs-badge\"\u003eHydro Multi-E · Multi-B\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eOverview\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cp\u003e\u003cstrong\u003eCIM 500\u003c\/strong\u003e is the Grundfos communication interface module for a direct Ethernet connection. It puts the pump or booster system on a building management or SCADA network over PROFINET IO, Modbus TCP, EtherNet\/IP or BACnet IP, and it is the Grundfos Remote Management (GRM) and GiC module for a direct internet connection. The module fits inside the pump terminal box and must be fitted by authorized persons.\u003c\/p\u003e\n\u003cp\u003eGrundfos lists it for: Dedicated Controls (CU 362), BoosterpaQ (CU 352), MAGNA3, Hydro Multi-E (Model H, I, J, 2), Hydro Multi-B, E-pump MGE (Model H, I, J, 11 to 22 kW), CIU900 and CIU901.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCIU900 and CIU901\u003c\/strong\u003e are Grundfos communication interface unit boxes, supplied without a CIM module installed. CIU900 does not contain an I\/O board; CIU901 does.\u003c\/p\u003e\n\u003cp\u003eGRM access needs a Grundfos data plan: the one-year direct-internet service for use with CIM 500 is quoted by Grundfos, and we can arrange it with the order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E1E3E6;border-left:3px solid #B8BDC4;padding:8px 14px;font-size:11.5px;color:#4A4A4F;margin-top:14px;line-height:1.5\"\u003eGenuine Grundfos equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.\u003c\/div\u003e\n\u003cdiv style=\"background:#fff;border-left:5px solid #B3122A;padding:15px 18px;margin-top:12px\"\u003e\n\u003cdiv style=\"font-family:Arial Black,Arial,sans-serif;font-size:15px;color:#B3122A;text-transform:uppercase;letter-spacing:1px;margin-bottom:6px\"\u003eGrundfos Limited Warranty\u003c\/div\u003e\n\u003cp style=\"margin:0;font-size:13.5px;color:#4A4A4F;line-height:1.55\"\u003eGrundfos warrants consumer purchases in the United States against defects in design, material and workmanship for up to \u003cstrong\u003e30 months from the date of manufacture\u003c\/strong\u003e shown on the nameplate. Commercial purchases are covered under clause 10 of Grundfos US Terms and Conditions of Sale. Source: Grundfos Installation and Operating Instructions 98419766, appendix B.1.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-sec\"\u003e\n\u003cdiv class=\"gs-h\"\u003eModels and Ratings\u003c\/div\u003e\n\u003cdiv class=\"gs-lead\"\u003e\n\u003cdiv class=\"table-wrapper\"\u003e\u003ctable class=\"gs-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCIM 500\u003c\/td\u003e\n\u003ctd\u003e98301408\u003c\/td\u003e\n\u003ctd\u003eUS GRM\/GiC module for direct internet connection, Ethernet RJ45; PROFINET IO, Modbus TCP, EtherNet\/IP, BACnet IP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCIU900\u003c\/td\u003e\n\u003ctd\u003e99448387\u003c\/td\u003e\n\u003ctd\u003eCIU box only, no CIM module installed, no I\/O board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCIU901\u003c\/td\u003e\n\u003ctd\u003e99448389\u003c\/td\u003e\n\u003ctd\u003eCIU box only, no CIM module installed, with I\/O board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-size:12.5px;color:#9B9EA3;line-height:1.55\"\u003eDescriptions from the Grundfos price list effective January 1, 2026 (GRM\/GiC page) and Hydro Multi-E Data Booklet 99347082, printed page 53. For the cellular version, see the \u003ca href=\"\/products\/grundfos-connect-monitoring-hardware\"\u003eCIM 280 MK II and antennas\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"gs-note\"\u003e\n\u003cb\u003eBefore You Order\u003c\/b\u003eCheck that your pump or controller is on the list above and which protocol your BMS uses. A CIU box ships empty, so order the CIM module with it. GRM needs a Grundfos data plan in addition to the module.\u003c\/div\u003e\n\u003cdiv class=\"gs-contact\"\u003eFor engineering-led sizing and selection support or a factory submittal, email \u003ca href=\"mailto:sales@watermainsupply.com\"\u003esales@watermainsupply.com\u003c\/a\u003e or call \u003ca href=\"tel:18885104036\"\u003e1-888.510.4036\u003c\/a\u003e.\u003cbr\u003e© Watermain Supply — A division of E4 Industrial LLC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eData Sheet\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\u003cdiv class=\"gs-dl\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/99347082_10.2025_Hydro_Multi-E_DB_US_Online.pdf?v=1790437860\" target=\"_blank\" rel=\"noopener\"\u003eHydro Multi-E Data Booklet, US 60 Hz (99347082, 10.2025)\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/98419766_09_2025_Hydro_Multi_E_PUBTYPE_US_online.pdf?v=1790437858\" target=\"_blank\" rel=\"noopener\"\u003eInstallation and Operating Instructions, Hydro Multi-E North America (98419766)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003ch5\u003eVideos\u003c\/h5\u003e\n\u003cdiv class=\"gs\"\u003e\u003cp style=\"font-size:13px;color:#9B9EA3\"\u003eNo manufacturer video is currently published for this item. Call 1-888.510.4036 and we will walk you through it.\u003c\/p\u003e\u003c\/div\u003e\n\u003c!-- \/TABS --\u003e","brand":"Grundfos","offers":[{"title":"CIM 500 - Ethernet Module","offer_id":50537050636463,"sku":"98301408","price":1319.76,"currency_code":"USD","in_stock":true},{"title":"CIU900 - Box, No I\/O Board","offer_id":50537050669231,"sku":"99448387","price":406.64,"currency_code":"USD","in_stock":true},{"title":"CIU901 - Box with I\/O Board","offer_id":50537050701999,"sku":"99448389","price":558.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0264\/1913\/4527\/files\/Grundfos_CIU_90x_Box_CIU900_CIU901_04d77af3-617e-45e4-8bb6-817c77b2822e.png?v=1790445323","url":"https:\/\/watermainsupply.com\/products\/grundfos-cim-500-ciu-communication-modules","provider":"Watermainsupply","version":"1.0","type":"link"}