RadioMaster ER4 ExpressLRS 2.4GHz / 4CH PWM Receiver

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, cars, and more.
  
• Compatible with all 2.4GHz ExpressLRS modules and transmitters with built-in 2.4GHz ExpressLRS.

COMPATIBILITY:

• Radio Transmitter/Controller with ELRS Protocol

SPECIFICATIONS:

• Part#: HP0157.RX-ER
• Item: ER4 2.4GHz ELRS PWM Receiver
  
• 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 x 15 x 5mm
  
• Firmware: Device Category: Radiomaster 2.4Ghz / Device: RadioMaster ER4 2.4GHz PWM RX

HELPFUL LINKS:

• User Manual

INCLUDES:

(1) ER4 2.4GHz ELRS PWM Receiver
(2) Heat-shrink tubes
(1) Voltage telemetry wire (Type-A)
(1) User card