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ESP-12F DC 5V/12V/24V 16 Channel Relay Board (ESP12F_Relay_X16)
ESP-12F DC 5V/12V/24V 16 Channel

Available from:
Aliexpress.com







Install method:
USB to Serial

GPIO #Component
GPIO00 User
GPIO01 User
GPIO02 User
GPIO03 User
GPIO04 User
GPIO05 74x595 OE
GPIO09 User
GPIO10 User
GPIO12 74x595 RCLK
GPIO13 74x595 SRCLK
GPIO14 74x595 SER
GPIO15 User
GPIO16 User
GPIO17 User
Configuration
{"NAME":"ESP12F_Relay_X16","GPIO":[1,1,1,1,1,7712,1,1,7680,7648,7744,1,1,1],"FLAG":0,"BASE":18}

This device uses two 74HC595 serial registers to control the relays, which are not enabled in default builds. Therefore you need to compile your own Tasmota binary, enabling USE_SHIFT595 setting.