KinCony A32 Pro ESP32 relay board based on ESP32-S3-WROOM-1U (N16R8) wifi chip, it have 32 manual control switch buttons can turn ON/OFF relay even if system is broken. Support 32 channel relay output and 2 channel dc 0-10v dimmer output, 2 channel 1-wire GPIOs, 4 channel analog input ports. It support 4G module (SIM7600 series) for SMS, voice call, GPRS communication for Tuya mobile application. SIM7600 module also support GPS, just need connect IPEX extender GPS antena. Download KCS firmware , use SMS or call to turn ON/OFF relay will be very easy for home automation DIY. LCD display will show wifi and ethernet IP address and 4G connection state and Tuya connection state. You can write any code by Arduino IDE / MicroPython / ESP-IDF development tool to ESP32 module. We will supply arduino demo code for different samples. Everyone can modify and change the code for your own smart home automation system project. it support use by ESPHome for home assistant or tasmota firmware. alibaba order link: https://www.alibaba.com/product-detail/A32-Pro-ESP32-Ethernet-RS485-4G_1601099455365.html aliexpress order link: https://www.aliexpress.com/item/3256806654053377.html visit for more: KinCony's website: https://www.kincony.com/ Aliexpress Online Store: https://kincony.aliexpress.com/ Facebook: https://www.facebook.com/kincony.smarthome Twitter: https://twitter.com/kincony