Radiomaster ER4 2.4GHz ELRS PWM Receiver

The RadioMaster ER PWM series receivers are based on the revolutionary ExpressLRS system. They offer high performance, high reliability, flexible configuration, fast response speed and very long range, giving you a whole new experience in your hobby. The ER4 PWM receiver can control 4 servos simultaneously. Designed with very low volume, it fits small aircraft, ships, cars and other models needing a small or lightweight receiver while maintaining full range.

Features:

Based on the revolutionary ExpressLRS system

High performance, high reliability, flexible configuration, high responsiveness and ultra-long range

Supports 4 PWM channels

Optimized PCB design from scratch

Automatic telemetry of external battery voltage or built-in receiver voltage

Supports Wi-Fi update and WEBUI configuration

High quality 2.54mm jack

Standard 15cm high sensitivity antenna

For small planes, boats, cars and more

Compatible with all ExpressLRS 2.4GHz modules and transmitters with built-in ExpressLRS 2.4GHz

Specifications:

Item Name: ER4 2.4GHz ELRS PWM Receiver

Power: DC 4.5 – 8.4V

Antenna type: 15cm high sensitivity antenna

Wireless Protocol: ExpressLRS 3.3.0 (pre-installed)

Output channels: 4CH PWM

Serial output: CRSF/Sbus

Telemetry power: 10mw

Battery voltage detection range: DC 4.0 – 35V

Weight: 3.0 grams

Dimensions: 30*15*5mm

Firmware: Device category: Radiomaster 2.4Ghz / Device: RadioMaster ER4 2.4GHz PWM RX

Equipment:

1 x ER4 2.4GHz ELRS PWM Receiver

2 x Heat shrink tube

1 x Voltage Telemetry Wire (Type-A)

1 x User Card