DSMX SRXL2 Receiver w/Connector (SPM4650C)

Spektrum SPM4650 DSMX SRXL2 serial micro receiver is a compact 2.4GHz DSMX receiver designed for space‑constrained multirotor and helicopter builds. Built around the SRXL2 protocol, it provides a fast, data‑rich serial link between the transmitter and flight controller, supporting up to 20 channels over a single wire and enabling telemetry and transmitter‑to‑device configuration right from the radio.

Weighing just 1.4 grams, the receiver is ideal for tiny airframes. It uses dual diversity antennas for solid reception in challenging installations, and operates over a wide 3.3–8.4V power range. A bind button is included for easy binding, and the plug can be left uninstalled to reduce weight. The package includes two U.FL antennas, a 6‑inch receiver extension cable, a 4‑pin connector, and a product manual, all designed to fit neatly into space‑limited builds with straightforward wiring to a compatible flight controller.