1.Description:
  It is a 16-bit relay driver module.It can realize mobile phone, computer, remote control.

2.Feature:
  1>.Built-in test code
  2>.Multi-bit IoT control
  3>.ESP32 main control chip
  4>.Mobile phone/computer/remote control
  5>.Support programming mode
  6>.Easy installation,easy handling and can be activated immediately and stably
  7>.APP supports multiple languages
  8>.Reserved firmware update interface

3.Parameter:
  1>.Product Name:16-Bit Relay Driver Module
  2>.Working Voltage:DC 5V
  3>.Chip:ESP32 main control chip
  4>.Work Temperature:-25℃~85℃
  5>.Work Humidity:5%~95%RH
  6>.Size:45.5*40.5*12.5mm

4.Instructions for Use:
  1>.The ESP32 remote module is used as a hotspot,please connect the wifi hotspot first.
  2>.Programming Mode:When programming is normally closed,reconnecting the power module is programming mode.When the programming is normally open,reconnecting the power module is the operating mode.

Note:
1. It cannot be used directly as there is no firmware inside. User need to complete the code writing and download by themselves.
2. Reference manual: http://attach01.oss-us-west-1.aliyuncs.com/IC/Datasheet/GY18022.rar

5.Operation Steps:
  1>.Install APP on the phone and complete the registration.
  2>.Mobile phone connects to your home Wifi.
  3>.Connect the module according to the instructions on the APP.
  4>.After the pairing is successfully added,the device's buttons will appear on the phone's homepage.

6.Mode Selection:
  1>."Program" is the mode selection.
  2>.When programming is normally closed,re-power on to enter the programming mode.
  3>.When programming is normally open,re-power on will enter the operating mode.