RadioMaster Launches ER4 2.4GHz ELRS PWM Receiver
This is an ExpressLRS-focused micro receiver squarely aimed at lightweight/air/FPV applications (3g weight, PWM for small builds) rather than crawler/trail/scale RC. RadioMaster's historically newsworthy items on this show are radio systems/transmitters and industry commentary, not small ELRS receivers, which fall into the 'generic electronics unrelated to crawlers' not-covered pattern. Even though it's a genuine new launch, the category fit is poor for a scale-crawler-centric show, capping it w
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RadioMaster's ER series adds the ER4, a compact 4-channel PWM receiver built on the ExpressLRS protocol. It weighs just 3.0 grams, measures 30x15x5mm, supports Wi-Fi updates/WEBUI configuration, and includes a 15cm high sensitivity antenna. Priced at $14.99, it targets lightweight and small-scale RC applications.