{"product_id":"radiomaster-ers-rb01-brushless-tachometer","title":"ERS-RB01 - Brushless Tachometer for Compatible ExpressLRS PWM Receivers","description":"\u003ch4 class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cstrong\u003eERS-RB01 Brushless Tachometer\u003c\/strong\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe ERS-RB01 measures brushless motor RPM directly from any two ESC output wires and sends real-time data to your EdgeTX radio via CRSF telemetry. It also supports pass-through expansion for easy daisy-chaining with additional ERS sensors.\u003c\/p\u003e\n\u003cp style=\"text-align: start;\"\u003e\u003cimg style=\"float: none;\" alt=\"ERS-RB01 -  Brushless Tachometer for Compatible ExpressLRS PWM Receivers\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/1_184e7f76-6550-4c1c-9789-5585dbbd3dac.jpg?v=1769581148\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate RPM Monitoring: \u003c\/strong\u003eCaptures real-time brushless speed with high precision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpressLRS Integration:\u003c\/strong\u003e Sends RPM data directly to compatible ExpressLRS receivers via the CRSF interface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Unit Support:\u003c\/strong\u003e Connect multiple ERS-RB01 sensors to monitor several units simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Ideal for any application requiring accurate RPM feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Easy to install without adding significant weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play:\u003c\/strong\u003e Quick setup with minimal wiring for fast deployment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--sticky-padding-top)\" dir=\"auto\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch4\u003eSensor Setup for PWM ExpressLRS Receivers\u003c\/h4\u003e\n\u003cp\u003eMost PWM ExpressLRS receivers support external sensors. For receivers without a dedicated UART, two PWM pins can be reassigned as TX\/RX through the receiver Web UI or ExpressLRS LUA script, enabling sensor connectivity while keeping the remaining PWM channels available for servos or ESCs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/2_dec202e5-82be-4213-9b94-e091583eea16.jpg?v=1769581148\" alt=\"ERS-RB01 -  Brushless Tachometer for Compatible ExpressLRS PWM Receivers\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003ch4 class=\"ybc-p\"\u003e\u003cstrong\u003eReal-Time Brushless RPM Monitoring Setup\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"ybc-p\"\u003eMost brushless systems support RPM monitoring. Pins can be reassigned via Web UI or LUA script to enable accurate telemetry (200–30,000 RPM, 98.1% accuracy) while keeping remaining channels free for servos or ESCs.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/3_11c32f8c-b46f-484d-a82a-052e88b9ad04.jpg?v=1769581148\" alt=\"ERS-RB01 -  Brushless Tachometer for Compatible ExpressLRS PWM Receivers\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003ch4 class=\"ybc-p\"\u003e\u003cstrong\u003eExpressLRS PWM Sensor Setup\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv class=\"ybc-p\"\u003eMost PWM receivers support external sensors. Reassign two PWM pins via Web UI or LUA script to enable telemetry while keeping other channels free for servos or ESCs.\u003c\/div\u003e\n\u003cdiv class=\"ybc-p\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0701\/8066\/7584\/files\/4_c90e120e-bd51-4e5b-bead-7e82b0c61e02.jpg?v=1769581147\" alt=\"ERS-RB01 -  Brushless Tachometer for Compatible ExpressLRS PWM Receivers\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eItem\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eERS-RB01 RPM-BLDC Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e5–8.4V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eOperating Current\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e10mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eMeasurement Method\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eContact type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eSupport\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eBrushless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eMotor Pole Pairs\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eLUA configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eRange\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e200–300,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eAccuracy\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e±0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e–10 ℃ to +85 ℃\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e28 × 12 × 8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; font-weight: bold;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e4.8g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0784\/9191\/0315\/files\/1_8e925187-d061-4dca-82c5-75fdeb64523e.jpg?v=1786604043\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cbr\u003e\n\u003ch4\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1 * ERS-RB01 RPM-BLDC 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\u003c\/div\u003e","brand":"mysite","offers":[{"title":"Default Title","offer_id":47437068697771,"sku":"RM0157.ERS-RB01","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/9191\/0315\/files\/c54073e0bb04937e1030aa74e67c99f1.jpg?v=1786602639","url":"https:\/\/begreatrchobbystore.com\/de\/products\/radiomaster-ers-rb01-brushless-tachometer","provider":"Begreat RC Hobby","version":"1.0","type":"link"}