["brand new and high quality\n\n\nFeatures:\nThe 12 V Dual WiFi relay module uses the ESP-01 as a WiFi module and it is for 8-bit MCU chips. \nOnly a simple configuration process can realize wireless control of 2-way relay through the mobile APP.\nOnboard ESP-01 WiFi module and high performance microprocessor STM8S103.\nThe module has 2 working modes:\nMode 1: The phone is directly installed on the WiFi module.\nMode 2: Equipped with a mobile phone and WiFi module on the router\nAdditional features: It can also be used as a USB relay when the ESP-01 is pulled out.\nTransmission distance: In an open environment, when the mobile phone is installed on the WiFi module, the maximum stable transmission distance is 100M.\nWhen the WiFi module and the mobile phone are simultaneously carried on the router, the transmission distance depends on the signal strength of the router.\nOn-board 12V, 10A // 250V AC 10A // 30V for DC relay, which can continuously pull 100,000 times, with diode discharge for protection and short response for time.\nUse Smartcongig technology to complete the account and password configuration on the APP ESP-01 WiFi module on the mobile phone, and configure the username and password memory functions.\nBoard mode selection and real-time working status indicator.\nReserved UART debug interface and STM8 SWIM program download interface.\n\nTips: Only for Android, IOS system cannot be used.\n\nSpecification:\nDimensions: 6x6.3cm/2.36x2.48inch\nColor: As shown\nQuantity: 1 Pc\nNote: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\n 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 x ESP8266 & ESP-01 4 Channels WiFi Relay Module"]