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WiFi Relay, Fast Response Power Off Memory ESP8266 ESP-01 APP Remote Control Module  for Garage Door for Turning on PC for Smart Home 5V,12V

<ul><li>8 Bit MCU Chip: The ESP8266 WIFI relay module uses ESP-01 as the WIFI module, with a mature and stable 8 bit MCU chip</li><li>Simple Configuration Process: Only a simple configuration process can realize the control of the relay in the local area using the mobile phone APP, onboard mode selection and real time working status indicator</li></ul>

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Specification: Item Type: WiFi Relay Module Onboard: High performance microprocessor and ESP-01WIFI module 2 Working Modes: The mobile phone is directly mounted on the WIFl module; the mobile phone and the WIFI module are both mounted on the router Additional Function: Can be as a USB relay when ESP-01 is unplugged Transmission Distance: The Maximum Stable Transmission Distance: Approx. 100meter / 328.1ft When the WIFI module and mobile phone are mounted on the router at the same time, the transmission distance depends on the strength of the router Reserved: UART debugging interface and MCU program download interface How to Use: IN+, IN-: Power input. GND, TX, RX: UART serial port pins. SWIM, PIN8, NRST: Reserved MCU program download port. Button S1: Mode switching, the default is mode 1. Button : Restore factory settings. LED D1/D2/D3/D4 red light: Relay working indicator light, lights up when it is turned on. LED D7 red light: Mode 1 indicator light. LED D5 blue light: Mode 2 indicator light. LED D6 green light: Working Status Indicator, Described As Follows: 1 When it is off, it means it is self configuring or loses connection with the router. 2 When 0.5S flashes quickly, it means waiting for the mobile APP to configure the WIFI account and password for the ESP-01 module. 3 When the 2S flashes slowly, it means the configuration is completed, and it is waiting to establish a TCP connection with the mobile phone. 4 When it is always on, it means that the TCP connection is successfully established with the mobile phone. The Two Reserved Jumper : Please insert them to the bottom in normal use ie RX connects to RX1, TX connects to TX1, if you want to use the USB to TTL serial port module to debug the ESP-01 module, please insert them to the top Otherwise there may be interference. COM1: Common terminal. NC1: Normally closed, the relay is short connected with COM1 before it is switched on, and it is suspended after it is switched on. NO1: Normally open terminal, the relay is suspended before the pull in, and short circuited with COM1 after the pull in. COM2: Common terminal. NC2: Normally closed, the relay is short connected with COM2 before it is closed, and it is suspended after it is closed. NO2: Normally open terminal, the relay is suspended before the pull in, and short circuited with COM2 after the pull in. COM3: Common. NC3: Normally closed, the relay is short connected with COM3 before it is switched on, and it is suspended after it is switched on. NO3: Normally open end, the relay is suspended before the pull in, and short circuited with COM3 after the pull in. COM4: Common terminal. NC4: Normally closed, the relay is short connected with COM4 before it is closed, and it is suspended after it is closed. N04: Normally open end, the relay is suspended before being closed, and shorted to COM4 after being closed. Relay Control hexadecimal hex format: Turn On The First Relay: A0 01 01 Close The First Relay: A0 01 00 A1 Open The Second Relay: A0 02 01 Close The Second Relay: A0 02 00 Open The Third Relay: A0 03 01 Close The Third Relay: A0 03 00 Turn On The Fourth Relay: A0 04 01 Close The Fourth Relay: A0 04 00 Package List: 1 x WiFi Relay Module Note: Currently the module only supports for system, not for iOS system.

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