RadioMaster ERS-CV01 Cell Voltage Sensor — dark-mode product image 1

RadioMaster ERS-CV01 Precision Cell Voltage Sensor for ELRS PWN Receivers

Name: RadioMaster ERS-CV01 Precision Cell Voltage Sensor for ELRS PWN Receivers
Brand: RadioMaster
SKU: 34492
Price: 31.30 AUD
Availability: InStock

$31.30 AUD $36.30 AUD

GST included Shipping calculated at checkout.

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Order in H, M, Seconds (before 1pm Sydney time) for same day despatch.

2 In stock

Price match

Fast dispatch from Somersby, NSW Easy returns Australian warranty & local support

Pickup available

1/80 Somersby falls RD, Somersby NSW

Usually ready in 2 hours

Product details

SKU: 34492

Barcode: RM0157.ERS-CU01

Shipping Weight: 55g

W/H: W-04-D-01

Categories: Drone RC RX Receivers, ELRS Express LRS Receivers & Modules, FPV Antennas, Radio Gear, Radiomaster, Weekly Specials

Tags: 2.4ghz, ELRS, Price Match, Receiver

Why buy from Phaser FPV?

Dependable — Phaser started in 2014. Long reputable history and 5 star reviews.
Speed — All stock is in our retail store in Somersby NSW Australia. We ship express today; you often receive tomorrow. Shipping details.
Transparent stock — If it says in stock, we ship today. If we know the ETA, we show it on the product.
Experience — Across our staff you'll find people who fly, build, and use this gear. Not sure what to buy? Call us — we'll help you avoid buying twice.
Free gift on first and recurring orders
Active on social media — tag us or DM us
Large Facebook community for like-minded pilots
GST registered — handy if you need to claim GST (some niche FPV stores are not)

Are you looking to buy RadioMaster ERS-CV01 Precision Cell Voltage Sensor for ELRS PWN Receivers in Australia?

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.

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

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.