{"title":"Sensors \u0026 Sending Units","description":"\u003cp\u003eTemperature sensors, CTs, and sending units improve charge accuracy and consumption monitoring. Install battery temperature sensors near the bank (not on the charge controller) and use CTs as directed by your monitor or inverter manual.\u003c\/p\u003e\n\u003c!-- alte-related-monitoring-2026-09-18 --\u003e\n\u003ch2\u003eWhich sensor do I need?\u003c\/h2\u003e\n\u003cp\u003eMost shoppers on this page are looking for \u003cstrong\u003ecurrent transformers (CTs)\u003c\/strong\u003e that plug into a monitoring gateway so they can see household consumption alongside solar production.\u003c\/p\u003e\n\u003ch3\u003eEnphase CT-200-SPLIT\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/enphase-ct-200-split-consumption-monitoring-for-envoy\"\u003eCT-200-SPLIT\u003c\/a\u003e enables consumption monitoring with a metered Enphase Envoy. Enphase typically requires \u003cstrong\u003etwo\u003c\/strong\u003e CT-200 units (one per line) on a 120\/240V split-phase service. Always follow the Envoy installation guide for CT orientation and breaker placement.\u003c\/p\u003e\n\u003ch2\u003eGateway vs sensor\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGateway\u003c\/strong\u003e (Envoy, TAP, Cloud Connect, COMMS-KIT) — the communications hub. Shop \u003ca href=\"\/collections\/gateways-communication\"\u003eGateways \u0026amp; Communication\u003c\/a\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor \/ CT\u003c\/strong\u003e — the measurement accessory that feeds the gateway. That is this collection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need CTs if I only care about solar production?\u003c\/summary\u003e\n  \u003cp\u003eOften no. Many Enphase IQ systems report production through the Envoy without consumption CTs. Add CT-200 when you want to see home load \/ net energy in Enlighten.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhere are battery shunts and Victron-style monitors?\u003c\/summary\u003e\n  \u003cp\u003eShunt-based battery monitors belong in Shunts \u0026amp; Battery Monitors when ACTIVE stock is available. Call \u003ca href=\"tel:8778784060\"\u003e877-878-4060\u003c\/a\u003e if you need a SOC monitor recommendation for your bank.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cp\u003eNeed a bill of materials for Envoy + CTs? Call altE at \u003ca href=\"tel:8778784060\"\u003e877-878-4060\u003c\/a\u003e.\u003c\/p\u003e\n","products":[{"product_id":"enphase-ct-200-split-consumption-monitoring-for-envoy","title":"Enphase CT-200-SPLIT Consumption Monitoring for Envoy","description":"Enphase Consumption CT Monitor\u003cbr\u003eNOTE: Installing this device with the Envoy-S metered will require 2 CT-200-SPLIT monitors, one for each line.\u003cbr\u003eWhen used with an Envoy-S Metered, the Enphase Consumption CT enables home energy consumption monitoring.\u003cbr\u003e8 foot, 18 gauge wire\u003cbr\u003eResidential use only\u003cbr\u003eRequires an Envoy-S Metered\n\u003c!-- alte-related-monitoring-2026-09-18 --\u003e\n\u003cp\u003e\u003cstrong\u003eRelated monitoring gear\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCT-200 requires a metered Envoy \/ compatible gateway — start with the \u003ca href=\"\/products\/enphase-env2-iq-am1-240-iq-envoy-system-monitor-and-gateway\"\u003eEnphase IQ Envoy\u003c\/a\u003e if you do not already have one.\u003c\/li\u003e\n  \u003cli\u003eShop \u003ca href=\"\/collections\/sensors-sending-units\"\u003esensors \u0026amp; sending units\u003c\/a\u003e and \u003ca href=\"\/collections\/gateways-communication\"\u003egateways \u0026amp; communication\u003c\/a\u003e for the rest of the monitoring stack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot sure how many CTs your panel needs? Call \u003ca href=\"tel:8778784060\"\u003e877-878-4060\u003c\/a\u003e.\u003c\/p\u003e","brand":"Enphase Energy","offers":[{"title":"Default Title","offer_id":46166689480923,"sku":null,"price":29.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/3365\/0395\/files\/consumption-ct_b1170f16-a048-42f6-b06b-0f24a2372c78.jpg?v=1729884312"}],"url":"https:\/\/www.altestore.com\/collections\/sensors-sending-units.oembed","provider":"AltE Store","version":"1.0","type":"link"}