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12V ESP8266 ESP-01 4 Channel WiFi Relay Module. 1 x 12v ESP8266 ESP-01 4-Channel WiFi Relay Module. The 5V dual WiFi relay module uses ESP-01 as the WiFi module and is compatible with 8 bit MCU chip.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.