{"product_id":"radiomaster-ers-cv01-precision-cell-voltage-sensor-for-elrs-pwn-receivers","title":"RadioMaster ERS-CV01 Precision Cell Voltage Sensor for ELRS PWN 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\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/1_39e8d82c-d50f-481f-b88d-b08dae202814.jpg?v=1769570472\" width=\"1024\" height=\"575\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReal-Time Per-Cell Voltage Monitoring: Instantly view individual cell voltages through your radio for improved battery safety and performance.\u003c\/li\u003e\n\u003cli\u003ePlug-and-Play Balance Port Connection: Easily connects to the battery’s balance port for accurate cell-level voltage readings.\u003c\/li\u003e\n\u003cli\u003eFuture-Ready Pass-Through: Includes an in-and-out port to daisy-chain additional ERS telemetry sensors as your setup grows.\u003c\/li\u003e\n\u003cli\u003eSeamless ExpressLRS Integration: Designed to work effortlessly with compatible ER series ExpressLRS PWM receiver. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ciframe width=\"1024\" height=\"574\" src=\"https:\/\/www.youtube.com\/embed\/ICXLDRpYn9I\" allowfullscreen=\"allowfullscreen\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eItem: ERS-CV01 Cell Voltage Sensor\u003c\/li\u003e\n\u003cli\u003eOperating voltage (serial port): 5–8.4V\u003c\/li\u003e\n\u003cli\u003eOperating current (serial): 8mA\u003c\/li\u003e\n\u003cli\u003eBalance port current (8S): 2mA\u003c\/li\u003e\n\u003cli\u003eSupported cells: 2–8S\u003c\/li\u003e\n\u003cli\u003eBattery types: LiPo, LiHV, LiFe, LiIon\u003c\/li\u003e\n\u003cli\u003eVoltage accuracy: ±0.01V\u003c\/li\u003e\n\u003cli\u003eTemperature range: –10 ℃ to +85 ℃\u003c\/li\u003e\n\u003cli\u003eSize: 43.5 × 25 × 7mm\u003c\/li\u003e\n\u003cli\u003eWeight: 6.5g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/2_4130dd95-325c-4163-b3e3-b9ca0d72dd49.jpg?v=1769570472\" width=\"1024\" height=\"575\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/3_87bff41c-1958-400e-a9f3-2f4fdd15d4f3.jpg?v=1769570473\" width=\"1024\" height=\"575\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/4_cd975dab-4293-43dc-86ba-6a2699f15bdf.jpg?v=1769570472\" width=\"1024\" height=\"575\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eUsing Sensors with Non-Plug-and-Play PWM ExpressLRS Receivers\u003c\/h3\u003e\n\u003cp\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\/p\u003e\n\u003ch3\u003eIncludes\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\u003ch3\u003eBrowse More\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrowse All \u003ca href=\"https:\/\/www.phaserfpv.com.au\/collections\/radio-gear\/FRSKY+Receiver\"\u003eRadiomaster Receivers\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrowse All \u003ca href=\"https:\/\/www.phaserfpv.com.au\/collections\/receivers\"\u003eReceivers\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrowse All \u003ca href=\"https:\/\/www.phaserfpv.com.au\/collections\/radiomaster\"\u003eRadiomaster\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RadioMaster","offers":[{"title":"Default Title","offer_id":46115349233835,"sku":"34492","price":34.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1477\/4314\/files\/1_1800x1800_5219e39b-84d3-4bca-8e09-0d11f7c561d0.webp?v=1769670692","url":"https:\/\/phaserfpv.com.au\/products\/radiomaster-ers-cv01-precision-cell-voltage-sensor-for-elrs-pwn-receivers","provider":"Phaser FPV","version":"1.0","type":"link"}