{"product_id":"radiomaster-ers-rb01-brushless-tachometer-for-compatible-expresslrs-pwm-receivers","title":"RadioMaster ERS-RB01 - Brushless Tachometer for Compatible ExpressLRS PWM Receivers","description":"\u003cp\u003eThe ERS-RB01 Brushless Tachometer measures RPM by tapping directly into any two wires of a brushless ESC output. The sensor captures precise speed data, sends it to a compatible ExpressLRS receiver via the CRSF interface, and relays the information back to your EdgeTX radio for real-time monitoring. Ideal for any application requiring accurate RPM feedback.\u003c\/p\u003e\n\u003cp\u003eAs part of the ERS sensor family, the ERS-RB01 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\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/1_184e7f76-6550-4c1c-9789-5585dbbd3dac.webp?v=1769611445\" alt=\"\"\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 src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/2_52909433-242b-4c67-8b13-ddcd57857f2a.webp?v=1769611489\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/3_36f0b398-59bc-4308-badc-2e68583bd566.webp?v=1769611496\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/4_884f1c5b-deb5-49ce-8bbc-fbe3b2b93b75.webp?v=1769611505\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2778\/6650\/files\/5_4410c61b-90e0-4e7b-80a3-8c3d23e1e6d6.webp?v=1769611516\" alt=\"\"\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\u003e\u003cspan data-type=\"text\"\u003eFeatures:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate RPM Monitoring:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eCaptures real-time brushless speed with high precision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpressLRS Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSends 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\u003cspan\u003e \u003c\/span\u003eConnect multiple ERS-RB01 sensors to monitor several units simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIdeal for any application requiring accurate RPM feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEasy to install without adding significant weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eQuick setup with minimal wiring for fast deployment.\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\u003eItem：ERS-RB01 RPM-BLDC Sensor\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 5–8.4V\u003c\/li\u003e\n\u003cli\u003eOperating current: 10mA\u003c\/li\u003e\n\u003cli\u003eMeasurement method: Contact type\u003c\/li\u003e\n\u003cli\u003eSupport: Brushless\u003c\/li\u003e\n\u003cli\u003eMotor pole pairs: LUA configurable\u003c\/li\u003e\n\u003cli\u003eRange: 200–300, 000RPM\u003c\/li\u003e\n\u003cli\u003eAccuracy: ±0.1%\u003c\/li\u003e\n\u003cli\u003eTemperature range: –10 ℃ to +85 ℃\u003c\/li\u003e\n\u003cli\u003eSize: 28 × 12 × 8mm\u003c\/li\u003e\n\u003cli\u003eWeight: 4.8g\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 * ERS-RB01 RPM-BLDC Sensor\u003c\/li\u003e\n\u003cli\u003e3 * Heat-Shrinkable Tube\u003c\/li\u003e\n\u003cli\u003e1 * Manual QR Code Card\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"RadioMaster","offers":[{"title":"Default Title","offer_id":68257921237229,"sku":"R2-14450","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5410\/9677\/files\/1_1080x_8b91b50d-0c86-4cd2-a8de-e92d110a8427.webp?v=1794366338","url":"https:\/\/primegrit.store\/products\/radiomaster-ers-rb01-brushless-tachometer-for-compatible-expresslrs-pwm-receivers","provider":"VELORA","version":"1.0","type":"link"}