Xenon SM-PW701U

Overview
May be controlled through Amazon Alexa or a proprietary smartphone app.

"XN-WM1" is silkscreened on the SoC module board in the FCC photos.

According to the Model Differences Description document at the FCC: "The product model(s)
 * SM-PW702, SM-SW801, SM-SW102, SM-S0301,
 * SM-PZ701, SM-PZ702, SW-SZ801, SM-SZ202, SM-SZ301
 * are identical in the same PCB layout, interior structure and
 * electrical circuits with the model SM-PW701U which tested in
 * Global Unit Technology Co., Ltd., the only difference is the
 * model name for commercial purpose."

This is sold on Amazon under many brands including Voion,
 * iHoan, TWB Smart, Wuudi, HausBell, SkyRoku, etc.

Specifications

 * CPU: Espressif ESP8266 - 802.11bgn IoT WiSoC,
 * Interfaces: SDIO 1.1/2.0, SPI, UART (ESP8266EX)
 * Datasheet more info