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Micro:bit V1.5 BBC Offical Microbit Programmable Learning Development Board

Micro:bit V1.5 BBC Offical Microbit Programmable Learning Development Board
Micro:bit BBC Offical Microbit V2 V1.5 Programmable Learning Development Board in sri lanka
Lakduino UNO R4

Lakduino UNO R4
Lakduino UNO R4 is a microcontroller board based on the popular Arduino UNO which supports the ATmega328P chip. It is an all-around upgrade for the traditional Arduino UNO provided to you at a highly affordable price. It has 14 digital input/output pins, 6 analog inputs, a 16 MHz ceramic resonator, a MicroUSB socket, a power jack, an ICSP header and a reset button.
Water Flow Sensor Flow meter 1/2″ 2.0MPa 1-30L-min

Water Flow Sensor Flow meter 1/2″ 2.0MPa 1-30L-min
Features:
Mainly used for water testing, water cooling system
Application: Water heaters, credit card machines, water vending machine, flow measurement device
High amplitude: ≥ 4.6V
Low amplitude: ≤ 0.5V
Electric strength: 1250V/min
Insulation resistance: ≥ 100MΩ
Hydrostatic pressure testing: ≤ 2.0Mpa
Specification:
The lowest rated working voltage: DC4.5 5V-24V
MQ-7 Carbon monoxide gas sensor Module
Gas Sensor Module
Testing gas: Carbon Monoxide
Detection of concentration: 10-1000ppmCO
Loop voltage: 10V DC
Heater voltage: 5V±0.2V ACorDC(high), 1.5V±0.1V ACorDC(low)
Load resistance: adjustable
Heating resistor: 31±3(indoor temperature)
E18-D80NK IR Obstacle Avoidance Proximity Switch 3-80cm Adjustable

E18-D80NK IR Obstacle Avoidance Proximity Switch 3-80cm Adjustable
E18-D80NK is a set of transmitter and receiver in one of the photoelectric sensor. Detection distance can be adjusted according to requirements. The sensor has many advantages such as long distance detection, low visible light interference, cheap price, easy assembly, and easy to use. It can be widely used in robot obstacle avoidance, pipeline line piece and many other automation products.