Sensors & Module

This is a 5V, 10A 2-Channel Relay interface board. It can be used to control various appliances, and other equipments with large current. It can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). It has a 1x4 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays

YF-DN50 is a large 2 inch diameter Water Flow meter Sensor that can be used to measure flow rate from

OLED (Organic Light-Emitting Diode) is a self light-emitting technology composed of a thin, multi-layered organic film placed between an anode and cathode. In contrast to LCD technology, OLED does not require a backlight. OLED possesses high application potential for virtually all types of displays and is regarded as the ultimate technology for the next generation of flat-panel display

The 20x4 character LCD module is designed to display letters, numbers, symbols, dot matrix. It can display 4 lines of 20 characters. Support 4-bit and 8-bit data transfer mode. Offers 5x7 matrix + cursor display mode. Providing display data buffer DDRAM, character generator CGROM and CGRAM. CGRAM can be used to store up to eight 5x8 dot matrix character font data graphic own definition. Provides a rich instruction set: clear display, cursor back to origin, display on / off, cursor on / off, display character blink, cursor shift, display shift and so on. It's easily controlled by MCU such as 8051, PIC, AVR, ARDUINO, ARM and Raspberry Pi. It can be used in any embedded systems, industrial device, security, medical and hand-held equipment.

This is a 5A power module DC-DC step-down module 24v/12V to 5V power converter module. With synchronous rectification scheme, wide voltage, high current, and high efficiency.  

2S 5A 8.4V 18650 Lithium Battery Charger Board Protection Module has the main IC using original precision imported components. With overcharge, over-discharge, over current, short circuit protection function, for a variety of different shapes of 3.7V capacity lithium batteries. Using the Japanese precision protection IC, VISHAY, AOS, IR, and other high-quality MOSFET, an FR-4 low-temperature coefficient of the plate, well-designed, comprehensive test. Compact size, suitable for many requirements of high integration, low-cost occasions, can meet the performance requirements of many aspects, to ensure the absolute safety of the battery group.

With Three-Way Soil Meter For Moisture, Light Intensity and pH Testing Meter, you can easily check on the condition of your plants. The moisture meter will quickly tell whether your plants are doing well. Firstly, let you know that dry and needs water or wet and could use a day to dry out, you will never over/under water your plants again. Secondly, it helps you to control pH level in soil, acidic or alkaline is suitable for your plants. Thirdly, testing whether plants getting adequate sunlight. Above all, equipped with this meter, you can give the best care to your plants and keep the soil and lawn healthy and happy. Note: Please remove probes from soil and wipe clean after each use.