The smart watering system device uses the R3 development board as the main control board. Equipped with a dedicated expansion board and PH2.0 sensor to avoid messy wire connections, build projects more easily and quickly, assembly and wiring are relatively simple, and performance is more stable! Production type:manual assembly, screw fastening structure Compatible development board:for development board Power supply method: 1. Use TYPE-CUSB port power supply voltage (5V) 2. Use power supply voltage (DC7V-12V) Others: onboard custom function button x1, spare expansion interface x1. Supported programming software:for ArduinolDE, for Mixly, for Ardublock, for Scratch. This kit can achieve: 1. The D2 button switches between automatic mode and manual mode. 2. The LED light is used as an indicator light for the working status of the water pump. 3. Manually control the water pump for watering. 4. The soil moisture sensor controls the switch of the water pump. 5. The water level sensor is used to detect the remaining water volume. When the water level is too low, a water shortage warning is issued through a buzzer and pumping is stopped. 6. The LCD display shows the real-time monitoring values of soil moisture and water level. 7. Remote monitoring is achieved through the Bluetooth module. Name:Intelligent watering system device Sensor: water depth sensor x1, soil moisture sensor x1 Actuator:active buzzer x1, LED light module x1 Display:LCD1602 LCD display x1 Basic input module:key switch module x1 Expansion board:- EXP1 Power module output:maximum 5V or 800MA Power interface input voltage range:6-12V Power Supply:3 x AAA batteries(Not included batteries) Note:Due to different production batches, the appearance and color of the components , but it will not affect the use. Colour:Wood Color Material:Wood and Electronic Components Package Contents:1 x Automatic Flower Watering System DIY Kit with R3 Development board (This is a DIY kit, you need to assemble it yourself) Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.