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.Launch VideoFeaturesBased on the Revolutionary ExpressLRS SystemHigh performance, high reliability, flexible configuration, fast response speed and ultra-long rangeSupport 4 PWM ChannelOptimized ground up PCB designAutomatically voltage telemetry of external battery voltage or built-in receiver voltageSupports Wi-Fi updates and WEBUI configurationHigh quality 2.54 mm connectorStandard 15 cm High Sensitivity AntennaFor small aircraft, boats and cars and moreCompatible with all 2.4GHz ExpressLRS modules and transmitters with built in 2.4GHz ExpressLRSSpecificationItem: ER4 2.4GHz ELRS PWM ReceiverPower supply: DC 4.5 – 8.4VAntenna type: 15cm high sensitivity antennaWireless protocol: ExpressLRS 3.3.0 pre-installedOutput channel: 4CH PWMSerial Output: CRSF / SbusTelemetry power: 10mwBattery voltage detection range: DC 4.0- 35VWeight: 3.0 gramsDimensions: 30*15*5mmFirmware: Device Category: Radiomaster 2.4Ghz / Device: RadioMaster ER4 2.4GHz PWM RXSizeRadioMaster ER Series ReceiversER4 ELRS PWM ReceiverER6 ELRS PWM ReceiverER8 ELRS PWM ReceiverER6G/ER6GV ELRS PWM ReceiverER8G/ER8GV ELRS PWM ReceiverPackage Includes1 * ER4 2.4GHz ELRS PWM Receiver2 * Heat-shrink tube1 * Voltage telemetry wire (Type-A)1 * User CardDownloadER4 Receiver User Manual
