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 Sep 18 - Sep 23

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
O
Verified Purchase
Octavia Ward
Grantham, US
★★★★★ 5
Great for price ⭐
Size: Small, Color: Blue-2 Pieces, Size: Small, Color: Blue-2 Pieces
Bought this for my son's junior prom and it looked so good on him. I had to get a few alterations done because it was a bit too big for him but all in all great quality for the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2025
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 5
Suit for Prom
Size: Large, Color: Navy Blue
My son (17) ordered this suit to wear to Prom (2 weeks before) and it was a hit! Great Quality and great fit! He even convinced a few of his friends to buy their suits here too! Would purchase again for sure!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
C
Verified Purchase
Cathy C
Port Orchard, US
★★★★★ 5
This is a terrific purchase.
Size: Large, Color: Navy Blue, Size: Large, Color: Navy Blue
Amazing for the price. It’s a wonderful suit fit just right for a 5’10”. 145 pound male. The quality is surprisingly wonderful for this suit and the color is accurate. As in the picture it is a slim fit and accentuates his figure. I would highly recommend this for a purchase. (be sure to use the measurements on their description before ordering). After a steam and a press we were ready to go. The packaging was very nicely done also.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
V
Verified Purchase
VKI
Los Angeles, US
★★★★★ 5
Perfect fit.
Size: Large, Color: Dark Gray
I’m 5’9”, about 180 lbs. I got an L based on the Amazon recommendation. The size chart showed the pants being a 36” which is big for me but it’s those that stretch so if you’re a 34” like me, it’ll fit perfectly. No alterations needed for me. Great fit, good looking suit, nice material. I immediately bought another and hope it fits as good as this one. Genuinely impressed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
N
Verified Purchase
Nagesh Yadav
Phoenix, US
★★★★★ 4
Pant issue
Size: X-Small, Color: Dark Navy
Except pant. Everything is good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026

recommand products