The RadioMaster ER series of PWM receivers are based on the revolutionary ExpressLRS system. It offers high performance, high reliability, flexible configuration, fast response speed and ultra-long range bringing you brand new experience with your hobby.

The ER4 PWM receiver can drive 4 servos simultaneously. Designed with a very small volume, it is suitable for small aircraft models, ship models, car models and other models that require a small or lightweight receiver while still providing full range.

FEATURES

• Based on the Revolutionary ExpressLRS System
• High performance, high reliability, flexible configuration, fast response speed and ultra-long range
• Support 4 PWM Channel
• Optimized ground up PCB design
• Automatically voltage telemetry of external battery voltage or built-in receiver voltage
• Supports Wi-Fi updates and WEBUI configuration
• High quality 2.54 mm connector
• Standard 15 cm High Sensitivity Antenna
• For small aircraft, boats and cars and more
• Compatible with all 2.4GHz ExpressLRS modules and transmitters with built in 2.4GHz ExpressLRS

Specifications:

Power supply: DC 4.5 - 8.4V

Antenna type: 15cm high sensitivity antenna

Wireless protocol: ExpressLRS 3.3.0 pre-installed

Output channel: 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

Package Included:

1x ER4 2.4GHz ELRS PWM Receiver

2x Heat-shrink tube

1x Voltage telemetry wire (Type-A)

1x User Card

User manual