ESP32-WROOM-32D-N4

ESP32-WROOM-32D-N4 is an Espressif Systems Wi-Fi and Bluetooth module in an SMD-38 module package, built on the ESP32-D0WD dual-core processor running up to 240 MHz with 4 MB of flash and Bluetooth 4.2 BR/EDR plus Bluetooth LE radios — the original WROOM-32 generation module that a large installed base of IoT products is still qualified on. Lifecycle note: Espressif marks the WROOM-32D series NRND (not recommended for new designs) in its official module documentation — this code is for sustaining those existing designs; new designs should start from the ESP32-WROOM-32E series. On evidence, stated plainly: Espressif's official documentation carries the base module name and the NRND marking, and the -N4 full code follows Espressif's standard ordering format (N4 = 4 MB flash) and is the code carried by Espressif's own storefront listings — the three together are the basis for this listing. Selection advice: the D and E module generations are not paperwork-identical — antenna and module revisions differ, so a sustaining build must order the 32D code it was certified with, not the newer 32E. Parameters verified against Espressif Systems documentation.