{"product_id":"radiomaster-ers-cv01-precision-cell-voltage-sensor-for-compatible-expresslrs-pwm-receivers","title":"RadioMaster ERS-CV01 - Precision Cell Voltage Sensor for compatible ExpressLRS PWM Receivers","description":"\u003cp\u003eThe ERS-CV01 Cell Voltage Sensor is a compact, plug-and-play telemetry module for use with compatible ExpressLRS receivers. Just connect the sensor to your battery’s balance port, and it will monitor the real-time voltage of each cell, transmit the data via the ExpressLRS receiver, and display it directly on your EdgeTX radio. \u003c\/p\u003e\n\u003cp\u003eAs part of the ERS sensor family, the ERS-CV01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eCheck out all our \u003ca href=\"https:\/\/pyro-drone.myshopify.com\/admin\/collections\/263643398187\" title=\"ExpressLRS Products Sold At Pyrodrone\" target=\"_blank\"\u003eExpressLRS Products\u003c\/a\u003e, \u003ca href=\"https:\/\/pyrodrone.com\/collections\/receivers\" title=\"Receivers for FPV Drone Racing and Freestyle sold by Pyrodrone\" target=\"_blank\"\u003eReceivers\u003c\/a\u003e, and the rest of our \u003ca href=\"https:\/\/pyrodrone.com\/collections\/radiomaster-products\" title=\"RadioMaster Products Sold At Pyrodrone\" target=\"_blank\"\u003eRadioMaster Products\u003c\/a\u003e!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe title=\"RadioMaster ERS Series Sensor | Telemetry Module for Compatible ExpressLRS PWM Receivers\" src=\"https:\/\/www.youtube.com\/embed\/ICXLDRpYn9I\" height=\"446\" width=\"795\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/1_39e8d82c-d50f-481f-b88d-b08dae202814.webp?v=1769609766\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/2_a796b319-97ad-4241-844e-20a31a36eaf3.webp?v=1769610018\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/3_8dfa747b-e12c-4866-93c3-2d41a63541a3.webp?v=1769610033\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/4_154596e2-03fb-4a38-9089-dcd7d3e346ea.webp?v=1769610045\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/5_bbb50d8d-c0e3-45fe-be10-4c4b21531eb1.webp?v=1769610056\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/6_5c866b8c-43a4-4b38-b7ab-381d67b63aef.webp?v=1769610068\"\u003e\u003c\/p\u003e\n\u003ch3\u003ePlug and Play Compatible Receivers:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eER6 2.4GHz ExpressLRSPWM Receiver\u003c\/li\u003e\n\u003cli\u003eER8 2.4GHz ExpressLRSPWM Receiver\u003c\/li\u003e\n\u003cli\u003eER8G \u0026amp; ER8GV ExpressLRS PWM Receiver\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003e\u003cstrong\u003eReal-Time Per-Cell Voltage Monitoring\u003c\/strong\u003e: Instantly view individual cell voltages through your radio for improved battery safety and performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003e\u003cstrong\u003ePlug-and-Play Balance Port Connection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEasily connects to the battery’s balance port for accurate cell-level voltage readings.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003e\u003cstrong\u003eFuture-Ready Pass-Through:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes an in-and-out port to daisy-chain additional ERS telemetry sensors as your setup grows.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003e\u003cstrong\u003eSeamless ExpressLRS Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned to work effortlessly with compatible ER series ExpressLRS PWM receiver. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-type=\"text\"\u003eSpecifications:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eItem: ERS-CV01 Cell Voltage Sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eOperating voltage (serial port): 5–8.4V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eOperating current (serial): 8mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eBalance port current (8S): 2mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eSupported cells: 2–8S\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eBattery types: LiPo, LiHV, LiFe, LiIon\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eVoltage accuracy: ±0.01V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eTemperature range: –10 ℃ to +85 ℃\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eSize: 43.5 × 25 × 7mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-type=\"text\"\u003eWeight: 6.5g\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-type=\"text\"\u003eUsing Sensors with Non-Plug-and-Play PWM ExpressLRS Receivers:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003eMost PWM ExpressLRS receivers are fully compatible; those without a dedicated UART port require reconfiguration to support external sensors (e.g., for telemetry). To enable this, reassign two PWM output pins as a serial UART—one for TX and one for RX—via the receiver's Web UI (accessed by putting the receiver into WiFi mode) or via the ExpressLRS LUA script. This enables sensor connectivity while preserving the remaining PWM channels for servos or ESCs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003eFor receivers that only provide standard servo pins, an optional \u003ca rel=\"noopener\" href=\"https:\/\/pyrodrone.com%20%E2%80%BA%20products%20%E2%80%BA%20radiomaster-ers-sensor-uart-to-dual-pwm-adapter\" target=\"_blank\"\u003e\u003cem\u003e\u003cstrong\u003eadapter cable\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e is available that converts the sensor’s UART connector to two standard servo plugs (TX and RX).\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003ePackage Includes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x ERS-CV01 Cell Voltage Sensor\u003c\/li\u003e\n\u003cli\u003e3 x Heat-Shrinkable Tube\u003c\/li\u003e\n\u003cli\u003e1 x Manual QR Code Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"RadioMaster","offers":[{"title":"Default Title","offer_id":43083394940971,"sku":"P11-14446","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/1_1800x1800_777b9bee-b482-411e-a913-60fbf81a870e.webp?v=1769609574","url":"https:\/\/pyrodrone.com\/products\/radiomaster-ers-cv01-precision-cell-voltage-sensor-for-compatible-expresslrs-pwm-receivers","provider":"Pyrodrone","version":"1.0","type":"link"}