SKU: 56632552589

RadioMaster ERS-RB01 Brushless Tachometer for ELRS PWM Receivers

Sale price$13.50 Regular price$15.00
Save 10%

Pay in installments of $3.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

RadioMaster ERS-RB01 Brushless Tachometer for ELRS PWM ReceiversThe 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. As part of the ERS sensor family, the ERS RB01 also supports pass through expansion, allowing

The 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.

As part of the ERS sensor family, the ERS-RB01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules.

Features

  • Accurate RPM Monitoring: Captures real-time brushless speed with high precision.
  • ExpressLRS Integration: Sends RPM data directly to compatible ExpressLRS receivers via the CRSF interface.
  • Multi-Unit Support: Connect multiple ERS-RB01 sensors to monitor several units simultaneously.
  • Versatile Applications: Ideal for any application requiring accurate RPM feedback.
  • Compact & Lightweight: Easy to install without adding significant weight.
  • Plug-and-Play: Quick setup with minimal wiring for fast deployment.

Specifications

  • Item:ERS-RB01 RPM-BLDC Sensor
  • Operating voltage: 5–8.4V
  • Operating current: 10mA
  • Measurement method: Contact type
  • Support: Brushless
  • Motor pole pairs: LUA configurable
  • Range: 200–300, 000RPM
  • Accuracy: ±0.1%
  • Temperature range: –10 ℃ to +85 ℃
  • Size: 28 × 12 × 8mm
  • Weight: 4.8g

Using Sensors with Non-Plug-and-Play PWM ExpressLRS Receivers

Most 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.

Includes

  • 1 x  ERS-RB01 RPM-BLDC Sensor
  • 3 x Heat-Shrinkable Tube
  • 1 x Manual QR Code Card

Browse More

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 56632552589

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 5 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
Kelly W.
Belleville, US
★★★★★ 3
Hard to assemble
Color: Grey
This is extremely hard to put together, but once its together it is pretty good. You will need to secure it to something. It falls over.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 6, 2026
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 5
Perfect form and function.
Color: Black, Color: Black
Needed to keep the neighbors from seeing my gear. Perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
J
Verified Purchase
Jackson Caesar
Chelsea, US
★★★★★ 5
Great investment, and easy to assemble.
Color: Grey
Excellent dividers for the home. I purchased this set 3 years ago and recently had to place another order because the first order proved to be a perfect accessory in my basement apartment. As previously mentioned, I am in a basement apartment, and with these dividers, I can take an open space and create compartments. After a while, you forget that that open space was once a single room. These options added a great deal to my "Fonshuay," and lifestyle. This is a great investment and it was easy to assemble.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 11, 2025
W
Verified Purchase
wlytle
Omaha, US
★★★★★ 1
NO instructions
Color: Grey
there were no instructions with this and it came in 100's of pieces. NOTHING, no picture, kind of hard to assemble when you dont know where to start
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 11, 2025
C
Verified Purchase
Cristina Moreta
Lake Worth, US
★★★★★ 5
Me cubrió exactamente como esperaba
Color: Grey
Cumplió mis expectativas
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026

recommand products