20pcs dc watering

Buy 20pcs DC 3V Watering Small Water Pump Silent Mini Water Cooling Water Pipe for R656.09

Buy 20pcs DC 3V Watering Small Water Pump Silent Mini Water Pump for R558.00

Buy 20pcs DC/DC 5V AMS1117-5V 800mA Power Supply Module Voltage Regulator for R219.08

Buy 20pcs DC 9V Step Up Boost Converter Voltage Regulate Power Supply Module Board for R1,026.90

Buy 20pcs DC 9V Step Up Boost Converter Voltage Regulate Power Supply Module Board for R995.99

Buy 20Pcs DC 5V KY-003 Hall Magnetic Sensor Module for R623.47

Buy 20pcs DC 12V Step Up Boost Converter Voltage Regulate Power Supply Module Board for R985.36

Buy 20pcs DC 2V-24V To 5V-28V 2A Step Up Boost Converter Power Supply Module Adjustable Regulator Board for R281.00

  fe Male DC connector with cable     Standard DC Male power connector for camera / electronics 20pcs

  Features   - Positive and negative markings - For use with all 12 or 24 volt CCTV cameras.     20PCS

20Pcs Soil Hygrometer Humidity Detection Moisture Sensor For Arduino Description: This is a summary of the soil moisture sensor can be used to detect moisture, when the soil is dry, the module outputs a high level, whereas output low. Using this sensor make an automatic watering system, so that your garden plants without people to manage. Operating voltage: 3.3V~5V. Adjustable sensitivity (shown in blue digital potentiometer adjustment) Dual output mode,analog output more accurate. A fixed bolt hole for easy installation. With power indicator (red) and digital switching output indicator (green). Having LM393 comparator chip, stable. Panel PCB Dimension: 3cm x 1.5cm. Soil Probe Dimension: 6cm x 2cm. Cable Length: 21cm. VCC: 3.3V-5V. GND: GND. DO: digital output interface(0 and 1). AO: analog output interface. Instructions for Use: 1. Soil moisture module is most sensitive to the ambient humidity is generally used to detect the moisture content of the soil. 2. Module to reach the threshold value is set in the soil moisture, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low. 3. The digital output D0 can be connected directly with the microcontroller to detect high and low by the microcontroller to detect soil moisture. 4. The digital outputs DO shop relay module can directly drive the buzzer module, which can form a soil moisture alarm equipment. 5. Analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture. Package Included: 20 x Soil moisture detector module 20 x Probe 20 x 2P Jumper Cable

20Pcs DC-DC 12V to 3.3V/5V/12V Voltage Converter Power Supply Module Board Feature:One channel input: DC 6V - 12V (the input voltage must be higher than the output voltage to 1V or more.)Triple output: 3.3V (ﾱ 0.05v error), 5V (ﾱ 0.05v error), 800mA (load current can not exceed 800ma), 12V (12V input directly to the output)Specially designed two rows of needle fixing hole, can be directly fixing on the plate to extend the experiment;Using multiple input and output pin, easy to use and connect;PCB board size: 4.5 x 4.5cmWith power indicator (red)Package includes:20 x Multi-output Power Supply Module

20Pcs AMS1117 5V Power Supply Module With DC Socket And Switch Package contains 1 X item of the smallest listed variant.

20Pcs MB102 Breadboard Module Adapter Shield 3.3V/5V For Arduino Board Description: Breadboard power supply module, compatible with 5 V, 3.3 V Apply to MB102 breadboard Input voltage: 6.5-12 V (DC) or USB power supply Output voltage: 3.3V/5V can switch over Maximum output current: Fluctuation two road independent control, can switch over to 0 V, 3.3 V, 5 V On-board two groups of 3.3V, 5V DC output plug pin, convenient external lead use. Size: 5.3*3.2*2.5cm Weight: 12g Please notice: this item only a Power Supply Module, Breadboard is not included. Package included: 20 x Power supply module Breadboard power supply module, compatible with 5 V, 3.3 V.      

20Pcs NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator Features: 1. As a square wave signal generator,generates a square wave signal used for experimental development. 2. Used to drive a stepper motor for generating a square wave drive signal. 3. Generate adjustable pulse for MCU. 4. Generate adjustable pulse,to control circuitry associated. 5. Size: 31mm x 22mm 6. Main chip: NE555 7. Input Voltage: 5V-15V DC. When power supply is 5 V, the output current can be 15 MA around; when 12V power supply, the output current can 35 MA around 8. Input current: >=100 MA 9. Output amplitude: 4.2V V-PP to 11.4V V-PP. (Different input voltage, the output amplitude will be different) 10. Maximum output current: >=15MA (5V power supply, V-PP greater than 50%), >=35MA (12V power supply, V-PP greater than 50%) 11. Output with LED indication(low level,LED will on; high level,LED will off;low frequency, the LED flashes) 12. The output frequency range is selectable: LF file: 1Hz ~ 50Hz                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        &nbs