RadioMaster ER16 16-Channel PWM Dual-Band Gemini-X ELRS Receiver LBT

RadioMaster ER16 16-Channel PWM Dual-Band Gemini-X ELRS Receiver LBT

Product description

The RadioMaster ER16 is a high-performance 16-channel PWM ExpressLRS receiver with dual-band Gemini-X technology for large RC airplanes and demanding model-building projects. The EU-LBT version supports 2.4 GHz and 868 MHz and, thanks to True Diversity, offers a reliable radio link with low latency and high resistance to interference.

With 16 amplified PWM outputs, two mutually isolated XT30 power connectors, and an external safety switch, the ER16 is particularly well-suited for large models with many servos and increased requirements for operational safety.

Dual-Band Gemini-X for Reliable Radio Connections

The ER16 uses two Semtech LR1121 radio chips and supports ExpressLRS Gemini as well as Gemini-X. In Gemini-X mode, the 2.4 GHz and 868 MHz frequency bands can be used simultaneously. This provides the receiver with additional reception reliability in challenging radio conditions.

16 PWM Channels and Redundant Power Supply

The 16 amplified PWM outputs allow for the connection of numerous servos and ensure stable signal transmission even with longer servo cables.

Two isolated XT30 inputs allow the use of independent power sources. If one power source fails, the second can take over. Additionally, the included external safety switch enables controlled activation of the receiver.

Comprehensive telemetry and flexible configuration

Four independent voltage measurements monitor the receiver’s power supply, both XT30 inputs, and an external battery voltage of up to 70 V. Additional components can be integrated via CRSF, SBUS, and a UART interface.

Thanks to built-in Wi-Fi and a WebUI, settings and firmware updates can be conveniently performed.

Features

• 16-Channel PWM ExpressLRS Receiver
• EU LBT version with 2.4 GHz and 868 MHz
• Dual-band Gemini and Gemini-X support
• True Diversity with two Semtech LR1121 radio chips
• 16 amplified PWM servo outputs
• Two isolated XT30 inputs for redundant power supply
• External safety switch included
• CRSF and SBUS support
• Bidirectional UART interface
• Four independent voltage telemetry channels
• External voltage measurement up to 70 V
• Telemetry transmission power up to 100 mW
• Wi-Fi configuration and firmware updates via WebUI
• Rugged MMCX antenna connectors
• Durable plastic housing
• Ideal for large RC aircraft and multi-servo systems

Technical Specifications

General

• Manufacturer: RadioMaster
• Model: ER16 PWM Dual-Band Gemini / Gemini-X
• Variant: EU-LBT
• Part Number: RM0157.0142-LBT
• Product Type: 16-Channel RC Receiver
• Radio Protocol: ExpressLRS
• Frequency bands: 2.4 GHz / 868 MHz (EU-LBT)
• Diversity: True Diversity
• RF chips: 2× Semtech LR1121
• Microcontroller: ESP32-S3
• Required ELRS firmware: Version 4.1.0 or higher

Channels & Interfaces

• PWM Outputs: 16
• PWM signal amplification: Yes
• Serial Protocols: CRSF / SBUS
• UART connection: 4-pin JST-GH
• Antenna Connectors: MMCX
• Safety switch connector: SW port
• Wi-Fi / WebUI: Yes

Power Supply & Telemetry

• Input voltage: 5–12 V DC
• Redundant power inputs: 2× XT30, isolated
• Telemetry transmission power: Up to 100 mW, adjustable via LUA
• External Voltage Measurement (EXT-V): 4–70 V DC
• Receiver Power Supply Voltage Measurement (V-PWM): Up to 12 V
• XT30-1 voltage measurement: Up to 12 V
• Voltage measurement XT30-2: Up to 12 V

Dimensions & Weight

• Dimensions: 61.5 × 43.8 × 16.8 mm
• Weight: 33 g without antennas
• Antenna length: 250 mm