Fangrui Product Details Er5c V2 Receiver Is Based On The High-performance, Revolutionary Expresslrs System, Featuring High Reliability, Highly Flexible Configuration, Ultra-fast Response Speeds, And An Ultra-long Receiving Range, Bringing With It A -new Usage Experience. The Er5c V2 Elrs Receiver Can Drive Up To 5 Servos And Has Built-in Receiver Voltage Telemetry And Battery Telemetry With The Ability To Automatically Detect Which Voltage Input To Use. It Is Designed For All Types Of Marine R/c Applications. Built-in A Tcxo (temperature Compensated Crystal Oscillator), Ensures Stable And Accurate Performance In Any Environment Optimized Pcb Design, Supports Wi-fi Updates And Webui Configuration Compact Size, Easy To Install. Forsurface Marine R/c Applications Item:er5c V2 2.4ghz Elrs Pwm Receiver Power Supply:dc 4.5-8.4v Antenna Type:high-sensitivity Antenna Wireless Protocol:elrs 3.3.0 Pre-installed Channels:5 Telemetry Voltage Detection Range:dc4.0 - 35v Rf Telemetry:yes Telemetry Power:10mw Weight:5.7 Grams Firmw