4×4 KEYBOARD KEYPAD
- This is 4×4 Matrix 16 Keyboard Keypad Telephone Style.
- It is 12 Button Keypad switch, ideal for code or data entry. Each key is rated for up to 1,000,000 life-stroke and also features a durable high-quality material contact surface for best environmental resistances.
- This 4×4 Keypad Matrix lets you quickly add controls to your electronics projects.
- It offers 0-9 numerals, A-D letters, and standard star(*) and hash(#) symbol
Price 650 Birr
https://vector4engineering.com/product/4x4-keyboard-keypad/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Big SOLENOID LOCK
- Color Silver Tone
- Rated Voltage DC 12V (DC24V is optional)
- Rated Stroke & Force2mm, 1300kgf
5mm, 850gf
- Power 7.5W
- Designed for 1-10 seconds long activation time
- Draws 650mA at 12V, 500 mA at 9V when activated
Price 1250 Birr
https://vector4engineering.com/product/solenoid-lock/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

WS2811 Addressable RGB STRIP
- Features : RGB, Waterproof, Dimmable, Changes Colours
- Model : 12V WS2811 strip
- WS2811 RGB Color 5M 20/60 LED Strip Light 12V Individual Addressable
- Full Color
- IP67 rated
- Cuttable every 3 LEDs along the cutting marks
Price 3000 Birr
https://vector4engineering.com/product/2668/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Power Supply 12V/16.5A
Slightly Used
Input voltage 100-120VAC 2.5A/ 200-240VAC 1.5A
Price 2500 Birr
https://vector4engineering.com/product/12v-16-5a-power-supply/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347/0924468599/0923522790
VECTOR FOUR ENGINEERING

IC SOCKETS
Price of 8 PIN IC SOCKET 50 Birr
Price of 16 PIN IC SOCKET 50 Birr
Price of 24 PIN IC SOCKET 80 Birr
Price of 28 PIN IC SOCKET 150 Birr
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

LOAD CELL AMPLIFIER – HX711
- Operation Voltage: 2.7V–5V
- Operation Current: < 1.5mA
- Selectable 10SPS or 80SPS output data rate
- Simultaneous 50 and 60Hz supply rejection
- The Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. By connecting the amplifier to your microcontroller you will be able to read the changes in the resistance of the load cell, and with some calibration you’ll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale, process control or simple presence detection.
Price 450 Birr
https://vector4engineering.com/product/load-cell-amplifier-hx711/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

XKC-Y25-V NON CONTACT LIQUID LEVEL INDUCTIVE SWITCH
- XKC-Y25-V Non Contact Liquid Level Inductive Switch Liquid Level Controller Water Pump On Off Sensor Easy Install DC 5 to 24 V
- Intelligent level adjustment and level memory function, level status display, multi-point serial connection; supports NPN Output, high-low level output, PNP output,RS485 signal output
- Detection is accurate and stable, can detect boiling water level.
- Pure electronic circuit structure, non-mechanical work, life durability and stable performance.
- High stability, high sensitivity, strong interference ability, free from external electromagnetic interference.
Price 1500 Birr
https://vector4engineering.com/product/xkc-y25-v-non-contact-liquid-level-inductive-switch/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

ATTINY85 USB DEVELOPMENT BOARD
- Support for the Arduino IDE 1.0+ (OSX/Win/Linux)
- Power via USB or External Source – 5v or 7-35v (12v or less recommended, automatic selection)
- On-board 500ma 5V Regulator
Built-in USB
- 6 I/O Pins (2 are used for USB only if your program actively communicates over USB, otherwise you can use all 6 even if you are programming via USB)
- 8k Flash Memory (about 6k after bootloader)
- I2C and SPI (vis USI)
- PWM on 3 pins (more possible with Software PWM)
Price 450 Birr
https://vector4engineering.com/product/attiny85-usb-development-board/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

FM TRANSMITTER MODULE
- I2C interface 5V TTL compatible
for Arduino plug and play
- Onboard MIC
- VCC Input: 3.0V ~ 5.0V
- It is conceived audio interface, and used for microphone or audio wire signal.
- Audio entrance signal regulating of amplitude and microphone regulating of sensitivity.
- Wireless FM audio microphone stereo-transmission FM radio small power.
- Antenna port on the board,Any metal line about 75cm can serves as an antenna.
- FM range from 70-108 MHz
- FM Transmitter Module V2.0 Digital FM Radio Module for Arduino Microphone Audio
Price 550 Birr
https://vector4engineering.com/product/fm-transmitter-module/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

AC 220V 2000W SPEED CONTROLLER
- Connect this device with lamp or home appliance in a series connection, then rotate the knob for dimming, speed, voltage, temperature control.
- Applicable appliance: electric furnace, water heater, lamps, small motor, electric iron etc.
- Input voltage: 220V.
- Maximum power: 2000W.
- Adjustable voltage: 90-220V AC.
- Material: plastic, metal.
- Size: 4.8cm x 5.5cm x 2.7cm.
Price 1500 Birr
https://vector4engineering.com/product/ac-220v-2000w-speed-controller/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

RADIAL NTC THERMISTOR
- Advanced NTC technology
- Temperature range from -55 °C to +125 °C
- Highly resistant to thermal shocks
- Small body diameter of max. 2.5 mm
- AEC-Q200 qualified
- Fast response time
- High sensitivity
- Non-condensing Moisture Environments
- RoHS Compliance
- Interchangeable ±0.2°C, 0°C to 70°C
- Pressed Disk Ceramic Sensor
Price 100 Birr
https://vector4engineering.com/product/radial-ntc-thermistor/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Used Power Supply NPS-230CB A
- AC input 100-127V/8A or 200-240V/4A 50-60Hz
- Main output : 3.3V/11A(13A 10 sec), 5V/13A(15A 10sec), 12V/17A(18.5A 10sec), 12V/0.3A
- Aux output: 5V/2A
- Maximum continuous output is 230W
Price 650 birr
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

CONDUCTIVITY SENSOR
- TDS sensor EC sensor electrode conductivity electrode conductivity sensor platinum black conductivity meter
- white :conductivity pin A
- Yellow :conductivity pin B
- RED:NTC 10k NTC thermistor
- Black:NTC thermistor GND
Price 2000 Birr
https://vector4engineering.com/product/conductivity-sensor/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

12V/26Ahr LEAD ACID BATTERY
- Non Spillable
- 12V/26Ahr Lead Acid battery
- VRLA AGM battery
- 12RP26VA
- design German technology
Price 6000 Birr
https://vector4engineering.com/product/12v-26ahr-lead-acid-battery/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

MAX6675K TYPE THERMOCOUPLE TEMPERATURE SENSOR
- Operating voltage: DC5V
- Operating current: 50mA
- Temperature measurement range: -200°C - 1300°C [0-1023° test steps; C]
- Temperature measurement accuracy: ± 1.5° C
- Temperature resolution: 0.25° C
- Output mode: SPI digital signal
- With fixed mounting holes for easy fixing.
- Storage temperature: -50 to 150 degrees Celsius
- Module Weight: 4g
- Module Size: 25 x 15 x 13mm
Price 1500 Birr
https://vector4engineering.com/product/max6675k-type-thermocouple-temperature-sensor/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

- 24V FAN
-Slighty used
- Dimensions L*W*H : 130mm*130mm*40mm
Price 650 Birr
https://vector4engineering.com/product/24v-fan/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

TDA2003A AUDIO AMPLIFIER/ TDA2030A LINEAR AUDIO AMPLIFIER
MODEL:TDA2003
Peak supply voltage (50ms) 40 V
VS DC supply voltage 28 V
VS Operating supply voltage 18 V
Output peak current (repetitive) 3.5 A
TDA2030A LINEAR AUDIO AMPLIFIER
Low frequency class AB amplifier most suited for audio amplification
- Can provide up to 20 Watts as output power
- Wide range of power supply from 6V to 36V
- Short circuit and thermal protection is available
Price of TDA2030/2003 80 Birr
https://vector4engineering.com/product/tda2030a-linear-audio-amplifier/
https://vector4engineering.com/product/tda2030a-audio-amplifier/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

MPU 6050 ACCELEROMETER + GYROSCOPE
- The communication protocol at which it operates is I2C.
- It is built in 16 BIT ADC, which provide high accuracy.
- Its operating voltage is 3 to 5 volts.
- It consists of a digital motion processor, which provide high computational power.
- It can be used to interfaces with IIC devices like magnetometer.
- Its Acceleration Range is +/-2g, +/-4g, +/-8g, +/-16g.
- I Its operating current is 3.9 mA when its six motion sensing axes and DMP are in motion.
- MPU-6050 sensor contains a 3 Axis MEMS accelerometer and a 3 Axis MEMS gyro in a single chip.
- It is very accurate, as it contains 16-bits analog to digital conversion hardware for each channel.
Price 600 Birr
https://vector4engineering.com/product/mpu-6050-acce
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

TYN612 THYRISTOR
- Thyristor is a switching device that can be used in power control circuit, over-voltage protection, and many other application. It requires a gate pulse to start, it gets self-latched and stays ON until the supply get interrupted. For this, we have to use a switching circuit in connection with the main supply of the circuit or across the thyristor to turn it OFF.
- Thyristor TYN612 is fit for all modes of control like overvoltage crowbar protection, motor control circuit, inrush current limiting circuits, capacitive discharge ignition and voltage regulation circuits.
- On-state RMS current is 12A
- Repetitive peak off-state voltage is 600V
Price 80 Birr
https://vector4engineering.com/product/tyn612-thyristor/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

MT8870 DTMF DECODER MODULE
- The MT8870 based DTMF (Dual Tone Multi-Frequency) decoder module is commonly used to control robots with a mobile phone, it is also used in different kinds of home automation projects where mobile dial pad input is required.
- This module works as a tone decoder that uses its 3.5 mm audio connector socket to get the input audio signal. It is popularly used for mobile and fixed telephone voice dialing and recording related functions.
- Power Input: 5V Nominal (4.5V – 5.5V)
- Onboard 3.5mm jack input Facility
- MT8870 Based Frequency Decoder
- 5 Channel Interface
- Detects 0-9, A-D, *, #
- LED notifier for Output state
Price 550 Birr
https://vector4engineering.com/product/mt8870-dtmf-decoder-module/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

LM393 COMPARATOR
- Dual Comparator in a single package
-Wide power supply Range
Singe supply – 2V to 36V
Dual supply – ±1V to ±18V
- Drain Current of only 0.4mA
- Input Offset Voltage is ±5mV maximum
- Power Dissipation: 660mW
- Can Drive most of the TTL and MOS loads
- Output can be Isolated from System Ground
- Low Offset Voltage and current
Price 50 Birr
https://vector4engineering.com/product/lm393-comparator/
Address – Megenagna, Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING