Catalog > Internet of Things (IOT) Related Products > More Platforms Step-Up DC Boost Adjustable Module Step-Up DC Boost Adjustable Module HKD ESP8266 5V DUAL RELAY WIFI 5V ESP8266 2-CHANNEL WIFI RELAY MODULE WITH TO ESP-01 WIFI MODULE AND 8 BIT MCU 190.33 ZAR inc for 1 Each 3 in Stock Add Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features On-board N76E003/STM8S003 and ESP-01 WIFI module Having two modes: Mode 1: Cell phones carry on the wifi module directly Mode 2: Cell phone and wifi module carry on the same router Additional function: As an USB relay module when unplug the ESP-01 Transmission distance: In the open environment, the maximum transmission distance is 100m when the cell phone carry on the wifi module directly ; when the wifi module and cell phone carrying on the same router, the transmission distance depend on the router’s signal intensity; Use Smartconfig technology of ESP8266 to configurate the password for the ESP-01 module with APP On-board 5V, 10 A / 250 v AC 10 A / 30 v DC relay, absorb 100000 times continuously, Module with diode effusion protection, short response time On-board model selection and working position indicator LED On-board preserved UART debug interface and MCU program interface Size: 59*40mm Interface and sources: IN+, IN-: 5V power input TX, RX: UART communication SWIM, NRST: MCU program interface S1: Mode selection key, default is mode 1 S2: Restore key LED D2 and D4(red): Relay indicator LED D7(red): Mode 1 indicator LED D5(blue): Mode 2 indicator LED D6(green): Working state indicator, the description of D6 as below: It means internal self-configuration or lost connection with the router when D6 off It means the ESP-01 are waiting for the APP configurate the password for it when D6 fast blink every 0.5S Package includes: 1 X 5V ESP8266 Dual WiFi Relay Module Internet Of Things Smart Home Mobile APP Remote Switch