Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
ERS Sensor UART to Dual PWM Adapter is a RadioMaster product intended for telemetry monitoring for voltage, current, GPS, altitude, RPM and model health. This page presents the practical buying information in one place: compatibility, SKU, variants, radio protocol, use case and technical details.
The content is written for customer decision-making through RC-MODEL, without supplier prices or outbound purchase routes.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
A buying table for matching servo size, torque, speed, gear type and voltage to trainers, gliders, 3D aircraft, EDF jets and Giant Scale models.
Mechanical setup guide for servo arms, linkage angles, throw, control horns, neutral position and radio setup after geometry is correct.
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
Failsafe setup for electric and fuel aircraft: throttle behavior, receiver signal loss, switch positions and safe verification before flight.
| Technical Specifications | |
| Manufacturer | RadioMaster |
| Brand | RadioMaster |
| Product Code | RM0157.ERS-ADPTR |
| All Variant SKUs | RM0157.ERS-ADPTR |
| Product Type | ERS Series Sensor |
| RadioMaster Collections | Accessories, ERS Series Sensor |
| Product Family | ERS telemetry sensor range |
| Application | telemetry monitoring for voltage, current, GPS, altitude, RPM and model health |
| Item | ERS Sensor UART to Dual PWM Adapter |
| Weight | 1.81g |
| Protocol / RF | ExpressLRS / ELRS |
| Connector type | JST-GH to 3p Servo/ 1p dupont |
| Size | 85mm |
Tags: RadioMaster, RM0157.ERS-ADPTR, RadioMaster Accessories, ERS Series Sensors, RC radio
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