Function features :

1.on board high quality MCU and ESP-01WIFI module

2.two working mode :

Mode 1:cellphone carry on wifi module directly

Mode 2: cellphone and wifi module carry on router together

Additional function :work as USB module when disconnect ESP-01 module

3. Transmission distance:

(1) the open environment, the mobile phone when carrying on the WIFI module maximum transmission distance of 100 m;
(2), when the WiFI module and cell phone carrying on the router at the same time the signal transmission distance depends on router signal

4. Use the Smartconfig technology to complete the configuration of the account and password of the esp-01 WIFI module on the mobile APP. The configured account and password will be memorized after power off

5. The board contains 5V,10A/250V AC 10A/30V DC relay, which can continuously absorb 100,000 times, with the protection of diode current and short response time.

6. With mode option and working statue LED indicator

7. With 4 isolator and strong anti interference ability

8. Reserved UART debug interface and MCU download port for program

Hardware introduction :

Board size ï¼š60*63mm

1，interface on board ï¼š

IN+、IN-：5V voltage input ï¼›

5V、GND、TX、RX：UART serial port PIN ï¼›

SWIM、PIN8、NRST：reserved MCU download port ã€‚

Button S1：change mode ï¼Œdefault mode is mode 1

Button S2：reset

LED D1/D2/D3/D4（red ï¼‰ï¼šrelay working LED，LED on when relay is on

LED D7（red ï¼‰ï¼šindicator for mode 1

LED D5（blue）：indicator for mode 2

LED D6（green ï¼‰ï¼šwork statue indicator ï¼Œexact details as below ï¼š

(1)When extinguished, it is being configured or disconnected from the router.

(2)0.5s fast blinking represents cellphone app is configuring WIFI account and password for ESP-01 module

(3) 2S slow blinking to configure finished ,and wait for connection with cellphone by TCP

(4)LED always on represents TCP connections with mobile phone successfully

Connection for reserved two cap jumper :

Generally ,insert them to bottom ,that is RX to RX1,TX to TX1 .Insert them to upper ,when use it as USB module

COM1 COM2 COM3 COM4 ï¼šCommon terminal ï¼›

NC1 NC2 NC3 NC4 ï¼šnormal close

NO1 NO2 NO3 NO4 ï¼šnormal open

Control command for relay ï¼ˆhex format ï¼‰ï¼š

Open relay 1 ï¼šA0 01 01 A2

Close relay 1 ï¼šA0 01 00 A1

Open relay 2 ï¼šA0 02 01 A3

Close relay 2：A0 02 00 A2

Open relay 3 ï¼šA0 03 01 A4

Close relay 3 ï¼šA0 03 00 A3

Open relay 4 ï¼šA0 04 01 A5

Close relay 4 ï¼šA0 04 00 A4

 Tips: all of the following are used to control the first 2 relay in the mobile phone APP. The third and fourth way are the same, except that the relay control instructions are different.

 2，get ready for the following software and tools ï¼š

(1)5V/1A adaptor and connect to IN+ and IN-ï¼›

(2)Install APP “EspTouch_Demo” android version to configure wifi account and password for ESP-01 module on the first time of mode 2