1.6 and 2 inch 7-segment display
Model - BCF E11001-AR1
Color - Red
Dimension - 1.6 inch (21mm*32mm)
Model - BCF E1501-AR
Color - Red
Dimension - 2 inch (32mm*40mm)
Price of 1.6 inch display 150 Birr
Price of 2 inch display 200 Birr
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

MAX485 TTL to Rs-485 Interface Module
- This low power transceiver module is based on the Maxim MAX485 IC to allow serial communication over very long cable runs (up 4000 feet / 1200 meters). Serial data can be transmitted in both directions (half duplex) at a data rate up to 2.5Mbps. The modules operate from a standard 5V power...Use MAX485 Interface chip
- Uses differential signaling for noise immunity
- Speeds up to 2.5Mbit/Sec
- Multi-drop supports up to 32 devices on same bus
Price 750 Birr
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING
https://vector4engineering.com/product/max485-ttl-to-rs-485-interface-module/

Load Cell - 20kg, Straight Bar (TAL220) This straight bar load cell (sometimes called a strain gauge) can translate up to 20kg of pressure (force) into an electrical signal. Each load cell is able to measure the electrical resistance that changes in response to, and proportional of, the strain (e.g. pressure or force) applied to the bar. The color code on the wiring is red = E+, green = O+, black = E-, and white = O-.
Price 1250 Birr
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING
https://vector4engineering.com/product/20kg-load-cell/

MAX30100 - Heart Rate Oxygen Pulse Sensor.
MAX30100 is a multipurpose sensor used for multiple applications. It is a heart rate monitoring sensor along with a pulse oximeter. The sensor comprises two Light Emitting Diodes, a photodetector, and a series of low noise signal processing devices to detect heart rate and to perform pulse oximetry.
Operating Voltage - 1.8V to 3.3V
Input Current - 20mA
Integrated Ambient Light Cancellation
High Sample Rate Capability
Fast Data Output Capability
Applications
Medical Oxygen measurement devices
Wearable Devices
Fitness Assistant systems
Price 450 Birr
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING
https://vector4engineering.com/product/max30100-heart-rate-oxygen-sensor/

WCMCU-101 OPT101 Analog Light Sensor.
- WCMCU-101 is an integrated chip built-in photodiode and transimpedance amplifier , the output voltage increases linearly with the light intensity .
- Amplifier is a single supply or dual power supply design , so can be used for battery-operated devices.
- Integrated photodiode and transimpedance amplifier on a single chip , discrete design, can reduce common problems, such as leakage current error , and since the gain peak noise caused by stray capacitance .
- working voltage of 2.7 to 36V, quiescent current of only 120uA .. do not need infrared .
Price 950 Birr
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING
https://vector4engineering.com/product/wcmcu-101-opt101-analog-light-sensor/

- SX1278 LoRa Module 433MHz 10KM Ra-02 Wireless Spread Spectrum Transmission Socket for Smart Home DIY.
- Ra-02 is a wireless transmission module based on SEMTECH’s SX1278 wireless transceiver.
- It adopts advanced LoRa spread spectrum technology, with a communication distance of 10,000 meters.
- It has strong ability of anti-jamming and has the function of air wake-up Consumption.
- The SX1278 RF module is mainly used for long-range spread spectrum communication, and it can resist Minimize current consumption.
Price 800 Birr
https://vector4engineering.com/product/sx1278-lora-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

HM-10 Bluetooth Module
- BT Version: Bluetooth Specification V4.0
- BLE chip – Bluetooth Low Energy consumption
- Send and receive no bytes limit.
- Working frequency: 2.4GHz ISM band
- UART Serial Interface
- Full-Speed USB Interface
- 12 General Purpose Input/output Pins
- In-System-Programmable Flash- 128 KB or 256KB
- 8-KB SRAM
- 32-kHz Sleep Timer With Capture
- Long range: Open space have 100 Meters
- Operating voltage of MODULE: 2.0V – 3.6V
Price 850 Birr
https://vector4engineering.com/product/hm-10-bluetooth-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

PN532 NFC Module
- PN532 NFC/RFID Module (Arduino & Raspberry Pi Compatible) 13.56Mhz
- 13.56MHz NFC / RFID Shield Module PN532 for Arduino. Supports SPI / IIC / UART Interface.
- The NFC / RFID breakout base on PN532, which is the most popular NFC chip, and is what is embedded in pretty much every phone or device that supports NFC.
- This module can pretty much do it all, such as read and write to tags and cards, communicate with phones (say for payment processing), and act like an NFC tag
- If you want to do any sort of embedded NFC work, this is the chip you will want to use. The PN532 is also very flexible, you can use 5V TTL UART at any baud rate, I2C or SPI to communicate with it
Price 950 Birr
https://vector4engineering.com/product/pn532-nfc-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

DS18B20 Temperature Sensor Module
- Working Voltage: 3V~5.5V
- Detected Temperature Range: -55°C~+125°C (-67°F~+257°F) deviation ±2°C ,-10°C~+85°C deviation ±0.5°C
- Panel Size: 21mm x 10mm
- DQ : data input/ output pin
- GND: ground. The sensor is widely used in HVAC environmental control, temperature detection of building, instrument and machine, and process monitoring and control.
Price 950 Birr
https://vector4engineering.com/product/ds18b20-temperature-sensor-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

UNI-T UT61D+ Digital Multimeter
- True effective value, big screen and big characters.
- AC voltage/current frequency measurement.
- NCV measurement, sound and light alarm, automatic shutdown, backlight, high current overheating alarm.
- UNI-T UT61D+ Handheld Digital Multimeter Tester Unit True RMS Auto Range 6000 Counts DC AC 1000
- USB communication/low battery indication
- Data retention (H)/relative value (REL).
- Auto/manual range
- Full range protection
- NCV/diode test/continuity test
Price 7500 Birr
https://vector4engineering.com/product/uni-t-ut61d-digital-multimeter/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Water Vapor Sensor
S: signal output
+: power (VCC)
-:GND
- Water Vapor Sensor Rain Detector Liquid Level Switch Humidity Sensor
- working voltage:3.3V or 5V
- working current:<20mA
- working temperature range:- 10 ~ 70 centigrade
- interface type: analog signal output
- size: 23mm* 35mm
Price 600 Birr
https://vector4engineering.com/product/water-vapor-sensor/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Infrared emitter & receiver
- The Infrared Receiver is based on HL-A838 integrated infrared receiver modules. IR transmitter module can receive incoming 38KHz modulated infrared signal, and demodulate into logic level. When it receives the modulated infrared signal, it outputs low, otherwise outputs high. IR remote control can be completed by using application of codec.
- Level control interface, power supply for 5V or 3.3V
- High level active, low drive current
- In accordance with the direction of the tube, it can be launched manually to adjust the actual application requirements.
- Infrared signal emitted by the transmitter tube 940nm wavelength
Price 550 Birr
https://vector4engineering.com/product/infrared-emitter-receiver/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Solid state relay SSR-25AA
- 25A actually 80-250VAC TO 24-380VAC SSR 25AA relay solid state
- With a switch no spark, no noise,high switching speed,anti-corrosion,moisture-proof,anti-vibration,long life.high reliability,electromagnetic compatibility and other characteristics.
- It can be widely used in aerospace, marine,household appliances,machine tools,telecommunications,automobile,mining,etc.automation and control area.
Price 2500 Birr
https://vector4engineering.com/product/solid-state-relay-ssr-25aa/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

New JGB37-550 Metal Gear Motor
- Model: JGB37-550 Metal Gear Motor
- Rated Voltage: DC 12V
- Material: Metal
- Revolving Speed: 28/ 53/ 86/ 110/ 160/ 260/ 480/ 770/ 1450/ 2300RP
Price 3500 Birr
https://vector4engineering.com/product/jgb37-550-metal-gear-motor/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Ceramic Vibration Sensor
- Analog piezoelectric ceramic vibration sensor based on piezoelectric ceramic chip analog vibration makes use of the anti-transformation process of piezoelectric ceramic making the electric signals vibrate. When piezoelectric ceramic chip is vibrating, the sensor signal terminal will generate electrical signals. The sensor can be used with Arduino dedicated sensor shield, and Arduino analog port can perceive weak vibration signals, so that it can work out the interactive works related to vibration, such as electronic drum interactive work
- Working Voltage: 3.3V or 5V.
Working Current: <1mA.
Operating Temperature Range: -10 ~ + 70 Celsius.
Interface Type: Analog Output.
Price 950 Birr
https://vector4engineering.com/product/ceramic-vibrati
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

ISD1820 Voice Record and Playback Module
- Operating Voltage: Wide power supply ranges from 2.4V to 5.5V DC
- With the internal audio amplifier, this board can drive 8 Ohm 0.5W speakers directly.
- An on-board microphone.
- Dual operating modes: Standalone mode, Microcontroller Driven mode
- ISD1820 is a small Voice Recorder and Playback module that can do the multi-segment recording. The user can achieve a high quality of recording (for 8 to 20secs) for each application with the adjustment of the on-board resistor. This Voice Recorder/Playback module is designed with embedded-Flash memory.
Price 650 Birr
https://vector4engineering.com/product/isd1820-record-and-playback-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

PN532 NFC RFID Module
- Operating voltage: +2.7V to +5.5V
- Supports II2, SPI, and high-speed UART (HSU)
- RFID reader/writer mode support for:
Mifare 1K, 4K, Ultralight, and DesFire cards
ISO/IEC 14443-4 cards such as CD97BX, CD light, DesFire, and P5CN072 (SMX)
- Innovision Jewel cards such as the IRT5001 card
- FeliCa cards such as RCS_860 and RCS_854
- Built-in PCB antenna (covered by white paint)
- 5 to 7cm communication distance
- On-board level shifter
- Standard 5-V TTL for I2C/UART and 3.3-V TTL SPI (VCC 3.3 to 5 V)
- Works as an RFID reader/writer
- Works as a 1443-A card or a virtual card
- Supports NFC with Android phone
Price 750 Birr
https://vector4engineering.com/product/pn532-nfc-rfid-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

433Mhz Superheterodyne RF Receiver and Transmitter Module
- Support ASK / OOK modulation, the receiver sensitivity of -108dBm;
- Operating frequency: 433.92 MHz, bandwidth of about ± 150KHz;
- mains input voltage range: 2.2V-5V;
- Working current: Type :2.1mA (Requirement:VDD=5V) ; Type :2.1mA (Requirement:VDD=3V)
- Quiescent Current: 1uA
- Low power consumption;
- good selectivity and spurious radiation suppression, and easy to pass CE / Fcc international certification;
- Good local oscillator radiation suppression, multiple receiver module to work with (ie, more than single income) and will not interfere with each other.
Price 750 Birr
https://vector4engineering.com/product/433mhz-superheterodyne-rf-receiver-and-transmitter-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Dust Sensor – DSM501A
- PWM Output
- Compact size and lightweight
- Easy installation
- 5V Single power supply
- The dust sensor module DSM501A is low cost, compact size for a particle density sensor.
- It is used to quantitative particle (> 1 micron) measurement with the principle of particle counter, can sense the tobacco smoke and pollen, house dust .
- This sensor consists light emitting diode lamp, detector, signal amplifier circuit and heater, it can be used in applications such as the air cleaner or air purifier, users can use this sensor easily with sensor PWM output.
Price 850 Birr
https://vector4engineering.com/product/dust-sensor-dsm501a/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

CC2530 Zigbee Module
- CC2530 Zigbee Module UART Wireless Core Board Development Board CC2530F256 Serial Port Wireless Module 2.4GHz Zigbee.
- 2.4-GHz IEEE 802.15.4 Compliant RF Transceiver
- Frequency:24MHz
- Flash:Up to 256KB
- SRAM:8kB
- GPIO:21
- SPI:1
- UART:1
- ADC:12-bit,8 channel
- Min VCC:2V
- Max VCC:3.6V
- Standby Power:0.4uA
- Wakeup Time From Standby:500us
- Operating Temperature
- RF Standard Supported:ZigBee/6LoWPAN/802.15.4 MAC
- CPU Core:8051
- Security:128-bit AES
- Antenna Connection:yes
- RX Current:20.5mA (Lowest)
- Frequency Bands:2394-2507MHz
Price 1000 Birr
https://vector4engineering.com/product/cc2530-zigbee-module/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING

Oscilloscope
- Digital Oscilloscope DS-2100CA 100MHz Fast Speed USB Connect 3.5nS
- Trigger Mode: edge/pulse width/line selectable video/slop/overtime etc
- USB Host & Device Connectivity Standard
- Multiple Automatic Measurements
- Four Math Functions including FFTs standard
- Provides Software PC real-time analysis *6 VGA Optionaltional
Price 42,000 Birr
https://vector4engineering.com/product/oscilloscope/
Address Megenagna Zefmesh Grandmall 3rd floor 301
0922787347 Kase/0924468599 Haben
VECTOR FOUR ENGINEERING