{"product_id":"radiomaster-ers-ba01-precision-barometric-altitude-sensor-for-expresslrs-systems","title":"RadioMaster ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems","description":"\u003cp\u003eThe ERS-BA01 Barometer Sensor provides accurate, real-time altitude data for compatible ExpressLRS receivers. By capturing barometric pressure and converting it into precise relative altitude information, the ERS-BA01 delivers reliable telemetry back to your EdgeTX radio. This sensor provides clear, responsive altitude monitoring. \u003c\/p\u003e\n\u003cp\u003eAs part of the ERS sensor family, the ERS-BA01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/1_8e3a9132-ae25-494f-b2c8-45143d6b10b2.jpg?v=1769580578\"\u003e\u003c\/p\u003e\n\u003ch2\u003eLaunch Video\u003ciframe width=\"1349\" height=\"759\" src=\"https:\/\/www.youtube.com\/embed\/ICXLDRpYn9I\" title=\"\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\n\u003c\/h2\u003e\n\u003carticle class=\"4ever-article\" data-clipboard-cangjie='[\"root\",{},[\"p\",{\"uuid\":\"miod46jg3ja9apoz2b\"},[\"span\",{\"data-type\":\"text\"},[\"span\",{\"bold\":true,\"color\":\"\",\"data-type\":\"leaf\"},\"Features\"]]]]' data-identifier-application__slash__x-cangjie-fragment=\"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\" data-identifier-application__slash__x-doc-key=\"5VLqXLbR7jmjYqX1\"\u003e\n\u003ch2\u003e\u003cspan data-type=\"text\"\u003eFeatures\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Altitude Telemetry:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConverts barometric pressure measurements into accurate relative altitude data for instant feedback on your radio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansion-Ready Pass-Through:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes an in-and-out port for daisy-chaining additional ERS sensors without rewiring your setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless ExpressLRS Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrates easily with supported ExpressLRS PWM receivers via CRSF for fast and dependable data transmission.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan data-type=\"text\"\u003ePlug and Play Compatible Receivers:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.nextfpv.com.au\/collections\/receivers-1\/products\/radiomaster-er6-2-4ghz-elrs-pwm-receiver\" target=\"_blank\"\u003e\u003cspan data-type=\"text\"\u003eER6 2.4GHz ExpressLRSPWM Receiver\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.nextfpv.com.au\/collections\/receivers-1\/products\/radiomaster-er8-2-4ghz-elrs-pwm-receiver\" target=\"_blank\"\u003e\u003cspan data-type=\"text\"\u003eER8 2.4GHz ExpressLRSPWM Receiver\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.nextfpv.com.au\/collections\/receivers-1\/products\/radiomaster-er8g-er8gv-2-4ghz-elrs-pwm-receiver\" target=\"_blank\"\u003e\u003cspan data-type=\"text\"\u003eER8G \u0026amp; ER8GV ExpressLRS PWM Receiver\u003c\/span\u003e\u003c\/a\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 adapter cable is available that converts the sensor’s UART connector to two standard servo plugs (TX and RX). \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003eAvailable here: \u003ca rel=\"noopener\" href=\"https:\/\/www.nextfpv.com.au\/collections\/receivers-1\/products\/radiomaster-ers-sensor-uart-to-dual-pwm-adapter\" target=\"_blank\"\u003eRadiomaster ERS Sensor UART to Dual PWM Adapter\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-type=\"text\"\u003eSensor Configuration \u0026amp; Telemetry Logging\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003eTo configure this sensor and view telemetry on your EdgeTX radio, install the RadioMaster Sensor Configurator LUA. The LUA allows adjustment of sensor settings, enables proper telemetry display, and supports data logging for post-flight review.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003eAfter downloading, connect your radio to a Mac or PC in USB-SD mode.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003eCopy the LUA files to:\u003cbr\u003e\/SCRIPTS\/TOOLS\/\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-type=\"text\"\u003e👉\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/SENSOR_LUA.zip?v=1769595857\" target=\"_blank\"\u003eDownload the RadioMaster ERS Sensors Configurator.lua\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/RM_Sensor_Configurator_LUA_Main.jpg?v=1769742102\"\u003e\u003cimg alt=\"ERS-RC01 - CDI Gas Engine Tachometer for Compatible ExpressLRS PWM Receivers\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/RM_Sensor_Configurator_LUA_Sensor_view.jpg?v=1769742102\"\u003e\u003cspan data-type=\"text\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/RM_Sensor_Configurator_LUA_BA01.jpg?v=1769742103\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/2_b9369f09-d560-4833-8f7c-ee0329127413.jpg?v=1769580578\"\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/3_58786f1d-dd7b-4960-b46d-ddb00c0de906.jpg?v=1769580578\"\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/4_13fee6d4-528c-44ac-851c-6c79a7a22ebc.jpg?v=1769580580\"\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/8_dfa9a9da-6356-4d4e-884b-457e3cb38313.jpg?v=1769580578\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan data-type=\"text\"\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eItem: ERS-BA01 Barometer Sensor\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 5–8.4V\u003c\/li\u003e\n\u003cli\u003eOperating current: 9mA\u003c\/li\u003e\n\u003cli\u003eAltitude accuracy: ±0.5m\u003c\/li\u003e\n\u003cli\u003eTemperature range: –10 ℃ to +85 ℃\u003c\/li\u003e\n\u003cli\u003eSize: 23.5 × 13 × 7mm\u003c\/li\u003e\n\u003cli\u003eWeight: 3.5g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan data-type=\"text\"\u003eSize\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/5_9ed63085-dae4-4b72-9836-c576100d5846_480x480.jpg?v=1769580905\"\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch2\u003eWeight\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/6_bd62f5b4-7a0e-4a98-8412-0f14e23d9bd8.jpg?v=1769580765\"\u003e\u003c\/p\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 * ERS-BA01 Precision Barometric Altitude Sensor\u003c\/li\u003e\n\u003cli\u003e3 * Heat-Shrinkable Tube\u003c\/li\u003e\n\u003cli\u003e1 * Manual QR Code Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"ERS-BA01 - Precision Barometric Altitude Sensor for ExpressLRS Systems\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/7_739f15f7-ba88-4f44-ad35-eae11b849e32.jpg?v=1769580578\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e","brand":"RadioMaster","offers":[{"title":"Default Title","offer_id":44549024251974,"sku":"RM0157.ERS-BA01","price":29.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0412\/2761\/files\/1_e8aa1458_78a8_4392_a4e6_37ef4f03b00f_1800x1800_45967aa0-7656-4324-8bb6-5e9f59ae40de.png?v=1769988168","url":"https:\/\/www.nextfpv.com.au\/products\/radiomaster-ers-ba01-precision-barometric-altitude-sensor-for-expresslrs-systems","provider":"Next FPV","version":"1.0","type":"link"}