SKU: 38938089404

Radiomaster ERS-CV01 - Precision Cell Voltage Sensor for Compatible ELRS PWM Receivers

Sale price$24.29 Regular price$26.99
Save 10%

Pay in installments of $6.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Radiomaster ERS-CV01 - Precision Cell Voltage Sensor for Compatible ELRS PWM ReceiversThe ERS CV01 Cell Voltage Sensor is a compact, plug and play telemetry module for use with compatible ExpressLRS receivers. Just connect the sensor to your batterys balance port, and it will monitor the real time voltage of each cell, transmit the data via the ExpressLRS receiver, and display it directly on your EdgeTX radio. As part of the ERS sensor family, the ERS CV01 also supports pass through expansion, allowing easy daisy chaining with

The ERS-CV01 Cell Voltage Sensor is a compact, plug-and-play telemetry module for use with compatible ExpressLRS receivers. Just connect the sensor to your battery’s balance port, and it will monitor the real-time voltage of each cell, transmit the data via the ExpressLRS receiver, and display it directly on your EdgeTX radio. 

As part of the ERS sensor family, the ERS-CV01 also supports pass-through expansion, allowing easy daisy-chaining with additional telemetry modules.

Features

  • Real-Time Per-Cell Voltage Monitoring: Instantly view individual cell voltages through your radio for improved battery safety and performance.
  • Plug-and-Play Balance Port Connection: Easily connects to the battery’s balance port for accurate cell-level voltage readings.
  • Future-Ready Pass-Through: Includes an in-and-out port to daisy-chain additional ERS telemetry sensors as your setup grows.
  • Seamless ExpressLRS Integration: Designed to work effortlessly with compatible ER series ExpressLRS PWM receiver. 

Plug and Play Compatible Receivers:

  • ER6 2.4GHz ExpressLRSPWM Receiver
  • ER8 2.4GHz ExpressLRSPWM Receiver
  • ER8G & ER8GV ExpressLRS PWM Receiver

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.

For 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). 

Cell Voltage Display, Configuration & Logging

The ERS-CV01 Cell Voltage Sensor requires both the CellsValues LUA and the RadioMaster Sensor Configurator LUA to function correctly. Together, these LUAs enable per-cell voltage display, sensor configuration, and telemetry logging for post-flight review on EdgeTX radios.

After downloading, connect your radio to a Mac or PC in USB-SD mode and copy the files as follows:

  • CellsValues LUA → /WIDGETS/
  • RadioMaster Sensor Configurator LUA → /SCRIPTS/TOOLS/

👉Download the CellsValues LUA

👉Download the RadioMaster ERS Sensors Configurator.lua

*adding telemetry to EdgeTx screen.

Specifications

  • Item: ERS-CV01 Cell Voltage Sensor
  • Operating voltage (serial port): 5–8.4V
  • Operating current (serial): 8mA
  • Balance port current (8S): 2mA
  • Supported cells: 2–8S
  • Battery types: LiPo, LiHV, LiFe, LiIon
  • Voltage accuracy: ±0.01V
  • Temperature range: –10 ℃ to +85 ℃
  • Size: 43.5 × 25 × 7mm
  • Weight: 6.5g

Download

Size

Weight

Package Includes

  • 1 * ERS-CV01 Cell Voltage Sensor
  • 3 * Heat-Shrinkable Tube
  • 1 * Manual QR Code Card

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: 38938089404

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 15 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Michael Jansen
Grantham, US
★★★★★ 5
Good material
Color: Black
It fits perfectly with my 10" iPad. Easy to grab and carry, high quality, and easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
Z
Verified Purchase
Zero
Cuba, US
★★★★★ 5
Just get it.
Color: Black
Fits like a glove. I love the feel and quality of the case. It doesn’t press down on the buttons. And it has a nice little nifty area for the pen. I’ve had a lot more cases that cost way more than this, and not even half the quality this one rocks by far the best on the market.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
M
Verified Purchase
Mary2go
Houston, US
★★★★★ 5
Perfect Case – Stylish, Functional, and Protective
Color: A-Pink
This iPad case is everything I was looking for! The clear backing is a great touch—it lets the color of my iPad show through, which I love. It feels sturdy without being bulky, and the fit is perfect. The front cover is magnetic and automatically turns off the screen when closed, which helps save battery and just makes things more convenient overall. I also really appreciate the built-in Apple Pencil holder—it keeps the pencil secure and prevents it from getting lost or falling off when I’m on the go. Great design, solid protection, and smart features. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 11, 2025
J
Verified Purchase
Janney
Natrona Heights, US
★★★★★ 5
Cute and nice
Color: A-Pink
It fit perfectly on my iPad but pink does get dirty 😓
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
D
Verified Purchase
Deyanira Morado
Louisville, US
★★★★★ 5
Great ipad case!
Color: A-Pink
does it’s job and holds up well, is not difficult for charging the actual ipad and works as both a cover when not in use and a stand when folded into a triangle :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026

recommand products