Dual-Pump Automatic Watering System
Model reference: WD-01ADE
Dual-Pump Automatic Watering System

Available from:

Install method:
USB to Serial

GPIO #Component
GPIO00 Button 1
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 None
GPIO05 Relay 2
GPIO09 Button 2
GPIO10 None
GPIO12 Relay 1
GPIO13 Led_i 1
GPIO14 None
GPIO15 None
GPIO16 None
GPIO17 None

Dual-pump home plant irrigation system. Runs using included power plug, via USB or four AAA batteries. Each pump can be triggered independently.

While flashing the ESP can be powered via serial, but it will not boot normally. Disconnect VCC from the serial-to-USB adapter and use the included power cable instead to power the device.


  1. Use a dull blade or thin plastic piece to move the front cover aside so that you can unscrew the two hidden screws. While removing the front cover some plastic tabs may break on the sides.


  1. Disconnect and mark the battery, pump A and pump B connectors from the board.

  2. Unscrew the board and solder some jumper wires to the PSF-B04 chip.


  1. Press button S1 while hooking up the serial connection to enter flash mode.

Home Assistant

For use with Home Assistant its advised to set friendly names for the relays:

Backlog FriendlyName1 Pump A; FriendlyName2 Pump B