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Model : CEL1218

A Private Branch Exchange (PBX) or a Private Automatic Branch Exchange (PABX - which is out of fashion since all modern day PBXs are automatic), is a phone switching system serving a business or organization and is usually located on the organization's premises. The PABX pro-vides phone services including internal calling, and access to the public switched telephone network (PSTN). It al-lows a small number of outside lines to be shared among all of the people of the organization. Advanced PBX phone switches sometimes provide auto-attendant, voice-mail, and ACD (automatic call distribution) services for the organization.  

The Hybrid IP-PABX trainer feature real latest Private Automatic Branch Exchange (PABX) products that have been specially researched and modified for training. The systems are fully operational and modular in nature. A set of experiments are designed to cover the theory, usage, setup and installation practices that presented in a compre-hensive experiment manual to guide the students under-standing the system. The trainer is easily migrated to VoIP (IP / IP Telephony). It is designed to support convergence via modular architecture, this IP-enabled system facilitates a smooth migration towards VoIP, allowing voice and data communication to function harmoniously within the same network, assuring additional flexibility in the future. 


●    Simulates an actual indoor commercial telephony PABX system
●    Consists of the hybrid main controller exchange unit plus 5 units of telephone which can link to standard telephone and proprietary telephone
●    Easy maintenance and programming
●    Advanced smart hybrid system





  • Multi waveforms : Sine, Triangle, Square, Ramp, Pulse and etc.
  • Separate TTL/CMOS, 50Hz Sine and single output
  • DC offset and symmetry continuously adjustable
  • Built-in 6 digits frequency counter upto 20MHz 
  • VCF input


Main output

Output frequency

0.2Hz ~ 2MHz

Output waveforms

Sine, Square, Triangle, Ramp, Pulse, TTL and etc.

Output impedance

50Ω ± 10%

Output amplitude

20Vp - p (1MΩ Load); ≥10Vp - p (50Ω Load)

Output attenuation

0dB / 20dB / 40dB / 60dB

DC offset

0 ~ ±10V (1MΩ Load); 0 ~ ±5V (50Ω Load)

Duty control

10% ~ 90%, continuous variable


Distortion factor

20Hz ~ 20kHz ≤1%

Frequency response

2Hz ~ 2MHz ≤ ±1dB


Rise or fall time




TTL output

Rise or fall time


Low level


High level




CMOS output

Output voltage

3 ~ 13.5V




Input voltage

0 ~ 5V

Input impedance


50Hz output





6 digits

Frequency range

5Hz ~ 20MHz

Input impedance

10kΩ ± 10%






1% ± 1 digit

Max. input voltage


Power supply

110 ~ 127 VAC ± 10%, 220 ~ 240VAC ±10%, 50Hz ±2Hz / 60Hz ±2Hz


265 (W) X 110 (H) X 300 (D) mm




Package Content :1 x MPB1638N, 1 x BNC-BNC Cable, 1 x Power Cord, 1 x User Manual

Warranty : 1 year local supplier warranty against manufacturing defects.


The module uses SPI to communicate with micro controllers. The open-hardware community already has a lot of projects exploiting the RC522 – RFID Communication, using Arduino and Raspberry Pi.


  • Integrated MFRC522,13.56MHz contactless communication card chip
  • Low-voltage, low-cost, small sizes of the non-contact card chip to read and write
  • Suitable for smart meters and portable handheld devices
  • Advanced modulation and demodulation concept completely integrated in all types of 13.56MHz passive contactless communication methods and protocols
  • 14443A compatible transponder signals, ISO14443A frames and error detection
  • Supports rapid CRYPTO1 encryption algorithm, terminology validation MIFARE products
  • MFRC522 support MIFARE series of high-speed non-contact communication, two-way data transmission rate up to 424kbit/s
  • Low cost, and ideal for user equipment development
  • The reader and RF card terminal design meets advanced applications development and production needs
  • Can be directly loaded into the various reader molds, very convenient


  • Operating Current :13-26mA/DC 3.3V
  • Idle Current :10-13mA/DC 3.3V
  • Sleep Current: <80uA
  • Peak Current: <30mA
  • Operating Frequency: 13.56MHz
  • Supported card types: Mifare1 S50, Mifare1 S70, Mifare UltraLight, Mifare Pro, Mifare Desfire and Mifare Classic
  • Environmental Operating Temperature: -20-80 degrees Celsius
  • Environmental Storage Temperature: -40-85 degrees Celsius
  • Relative humidity: Relative humidity 5% -95%
  • Data transfer rate: Maximum 10Mbit/s
  • Module interface: SPI
  • Reader Distance: ≥ 50mm / 1.95″
  • Size: RFID-RC522 Module:3.9 x 6 cm; Standard S50 Blank Card :8.5 x 5.4 cm
  • Diameter of S50 special-shaped card: 3.1 (max)

Package Contents : 

  • 1 x RC522 RFID module / board
  • 1 x 13.56MHz Key tag
  • 1 x 13.56MHz Card
  • 1 x 8 ways straight header pin
  • 1 x 8 ways right angle header pin


Tutorial #1 :

Tutorial #2 :

Tutorial #3 :



The 5V Relay Module / Breakout Board is a convenient board to be used with 5V microcontrollers such as Arduino, Raspberry Pi and other microcontroller. You can easily use 5V signal to control the relay.

The board has one relay which works on 5V but the input signal can come directly from microcontroller output working at 5V to control relays. Each relay can switch variety of AC or DC high voltage, high current loads working at 110V or 250V AC mains like lights, fans, and motors and such. The status of relay is indicated by the RED Led.


  • LED Indication of Relay ON.
  • Direct input from 5V Microcontroller for relay control.
  • Output terminal for relay contacts.
  • Provision of 3 pin male header for wire connection.


  • Digital output controllable
  • Compatible with any 5V microcontrollers
  • Single channel relay board
  • Control signal : TTL level
  • Loigc : Active low
  • Maximum load: AC250V/10A, AC125V/15A, DC30V/10A
  • Trigger current: 5mA
  • Working voltage: 5V
  • Module size: 43 x 17 x 18.5mm (L x W x H)
  • Four mounting bolts holes, diameter 3.1mm
  • DC+: positive power supply (VCC)
  • DC-: negative power supply (GND)
  • IN: low level control relay
  • NO: normally open relay interface
  • COM: Common Interface Relays
  • NC: normally closed relay interface

Three inputs:

  • VCC = 5V is needed
  • GND = Common Ground, 0V
  • IN = Control signal need to be 0V to activate the Relay (Active Low)

The relay terminals (COM, NO, and NC) are brought out using a 3-way screw terminal. On-board relay is rated at 10A. It can be used in many applications: controlling high voltage, high current loads such as motor, solenoid valves, lamps, and AC load. It also comes with 2 LEDs to indicate the status power (VCC) and the status of the relay.

Note: This is an active-low device, which means logic low (0V) at pin IN will trigger the relay.


  • Electromagnetic relays are employed for the protection of various ac and dc equipments.
  • The over/under current and voltage protection of various ac and dc equipments.
  • For differential protection.
  • Device switching.
  • Multiple DIY projects.

Package Content : 1 x Single Channel 5V Relay Module





  • Compact in size
  • Easy to operate and stable
  • Binding post or safety socket connector selections
  • Suitable for colleges and universities experiments
  • Moving coil type


  • Measuring Range : DC 0 ~ 5V 
  • Accuracy : ±2.5% F.S.
  • Dimensions : 133mm x 97mm x 100mm
  • Weight : 0.3kg

Warranty : 6 months local supplier warranty against manufacturing defects





  • Compact in size
  • Easy to operate and stable
  • Binding post or safety socket connector selections
  • Suitable for colleges and universities experiments
  • Moving coil type


  • Measuring Range : DC 0 ~ 5V ~ 15V 
  • Accuracy : ±2.5% F.S.
  • Dimensions : 133mm x 97mm x 100mm
  • Weight : 0.3kg

Warranty : 6 months local supplier warranty against manufacturing defects





  • Compact in size
  • Easy to operate and stable
  • Binding post or safety socket connector selections
  • Suitable for colleges and universities experiments
  • Moving coil type


  • Measuring Range : DC 0 ~ 5A 
  • Accuracy : ±2.5% F.S.
  • Dimensions : 133mm x 97mm x 100mm
  • Weight : 0.3kg

Warranty : 6 months local supplier warranty against manufacturing defects


TV Antenna Cable Male to Male, 1.5m


  • Reduces contact resistance and signal attenuation with zinc alloy RF in-line 
  • Hydraulic injection molding machine, new mold, beautiful product, stable and reliable quality
  • 75 ohm coaxial cable structure design
  • PVC sheath, wear-resistant, acid and alkali resistant, more environmentally friendly, long service life
  • Widely used in digital TV set-top boxes, machines with standard TV connectors; for RF signal transmission in high-definition TVs, digital TVs, plasma TVs, LCD TVs


  • Length: 1.5 meters
  • Colour: White
  • Impedance: 75 Ohm
  • Type: Coaxial
  • Material: PVC,Copper and Steel
  • Signal: Analogue/Digital

Package Content : 1 x TV Antenna Cable Male to Male, 1.5m


Arduino Sensor Shield V5.0 allows you to connect to various modules like sensors, servos, relays, buttons, potentiometers, Each functional module has buckled port with VCC, GND and Output, which has corresponding port on the Sensor Shield, connected with a plain 2.54mm dual-female cable you may start playing already. Buckled brick cables are like cement for bricks, make the connections easier, secure and more professional looking.

You can easily connect with usual analog sensors by using this expansion board, such as ray sensor.if you support by this expansion board and corresponding circuit module,you only need to combine arduino and sensors module by using special cables, because concrete circuit details achieve by corresponding sensors module, so you only need to consider that how to read data coming from the sensor by program in arduino.

For Arduino beginners, you do not have a headache for the cumbersome and complex circuit connection, the sensor extends the true sense of the board to simplify the circuit which can easily connect the commonly used sensor, a sensor requires only a common 3P sensor cable (regardless of digital cable and analog cable), after the completion of the circuit connection, the preparation of the corresponding Arduino program downloaded to the Arduino Duemilanove controller reads the sensor data, or receive wireless module to return data after computing the final easy to complete your own interactive works.


  • PIN13 LED Pilot
  • Digital I/O Ports D0-D13
  • Analog I/O Ports A0-A5
  • Reset Button
  • Power In
  • Power LED
  • SD Card Module Communication Interface
  • RB URF V1.1 Ultrasonic Sensor Interface
  • RS232 Interface(TTL)
  • Bluetooth Module Communication Interface
  • APC220 Wireless RF Modules Communication Interface
  • IIC Interface
  • 12864 LCD Parallel Interface
  • 12864 LCD Serial Interface
  • 32 Servo Controller Interfaces
  • Dimensions: 57x57x18.5mm
  • Weight: 23g


  • Arduino NG, Arduino Diecimila, Arduino Duemilanove, Arduino UNO

Package Content : 1 x Arduino Sensor Shield V5.0


Data Sheet :


Much like it's more well-known brother, the HC-05, the HC-06 is a transparent TX/RX pipeline Bluetooth module which allows devices to communicate via a serial connection with all of the Bluetooth specific handling taken care of by the module's software stack.

The HC-06 module itself is mounted onto a breakout board which provides easy, breadboard friendly 0.1" headers for Power, Ground, TX, RX, and enable pins. The breakout board also provides logic level shifting which allows the HC-05 to be compatible with the 5V logic levels of Arduino and other popular microcontroller boards.

Getting started with the HC-06 is as easy as connecting it up to your microcontroller, configuring it using simple AT commands, and then pairing it with other Bluetooth devices.

This module have build in 3.3V voltage regulator and helps to breakout the important pins (Vcc, Gnd, Txd, Rxd). Based on CSR BC04 (BC417) chip, Bluetooth V2.0 + EDR.

**Note that the HC-06 can only be configured as a Slave device. If you need a module that can be used as either Master or Slave**


  • Bases at CSR BC04 (BC417) Bluetooth technology + EDR standard
  • Build-in 2.4GHz PCB antenna
  • Operating frequency: 2.4GHz ISM frequency band
  • Modulation mode: Gauss Frequency Shift Keying (GFSK)
  • Transmit power: ≤ 4dBm, second stage (Bluetooth class 2 power level)
  • Sensitivity: ≤-84dBm at 0.1% Bit Error Rate
  • Transmission speed: 2.1Mbps (Max) / 160 kbps (Asynchronous), 1Mbps / 1Mbps (Synchronous)
  • Safety feature: Authentication and encryption
  • Supported configuration: Bluetooth serial port (major and minor)
  • Slave, 9600 baud rate, N, 8, 1. Pincode 1234
  • Range test: 10 meters
  • Operating voltage: 3.3V to 6V DC
  • Operating current in pairing is in the range of 30~40mA.
  • Operating current in communication is 8mA.
  • Operating temperature range: -25 °C - +75°C
  • Dimensions: 38.5mm×15.5mm×2.2mm
  • Weight: 5g

Package Content : 1 x HC-06 Bluetooth Wireless Serial Transceiver Module


Tutorial #1 :

Tutorial #2 :


Durable and Sustainable Transparent Enclosure / Case / Casing For Arduino UNO R3 Module Board

Type: Injection Molding Transparent Plastic

Dimensions : Approximately 79.5 x 64.5 x 21mm / 3.12 x 2.53 x 0.82"

Material : Plastic

Note : Arduino Uno R3 Module Board Not Included

Package Content : 1 x Transparent Enclosure / Case / Casing For Arduino UNO R3 Module Board


This is the mounting bracket / holder for HC-SR04 ultrasonic distance sensor which enable you to mount the sensor to your mobile robot or project easily.

  • Color: Clear
  • Material: Acrylic (please tear off the protective cover)
  • Siz e: ~ 50 x 36 x 3mm
  • Perfectly match with HC-SR04 ultrasonic sensor module
  • Two mounting hole with M3 diameter (3.0mm)

Note : HC-SR04 not included

Package Content : 1x HC-SR04 Ultrasonic Sensor Module Mounting Bracket


The ultrasonic sensor ranging module HC-SR04 offers excellent range accuracy and fairly stable readings at very low cost. It requires two digital I/O pins (an output pin and an input pin) to interface with it. Since ultrasonic sensor uses sonar to determine the distance to an object, its operation is not affected by sunlight, spotlight and object's surface color which will affect the readings of any infrared distance sensors. However acoustically soft materials such as clothes can be difficult to detect.

HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work : 

(1)    Using IO trigger for at least 10us high level signal,
(2)    The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
(3)    If the signal back, through high level, time of high output I/O duration is the time from sending ultrasonic to returning. Test distance = (high level time×velocity of sound (340m/s)) / 2


  • Working Voltage : 5V DC
  • Quiescent Current : <2mA
  • Working Current: 15mA
  • Effective Angle: <15°
  • Sensing Range : 2cm – 400cm or 1" - 13ft
  • Resolution : upto 0.3 cm
  • Trigger Input Signal : 10uS TTL pulse
  • Echo Output Signal : Input TTL lever signal and the range in proportion
  • Dimension : 45.3 x 20.4 x 15.4mm (not including 4-way header pins)


Tutorial 1 :

Tutorial 2 :

Turorial 3 :

Tutorial 4 :

Package Content : 1 x HC-SR04 Ultrasonic Sensor Distance Ranging Module 



The ceramic fuse is used for protection in electrical distribution, electrical circuits and various industrial applications against overload and short circuit.


  • Small size
  • Full range protection
  • Safest and most reliable protection system
  • High limiting and breaking capacity
  • Low power dissipation


  • Material: Ceramic Tube, Nickel-plated Brass End Cap
  • Rated Voltage: 500V
  • Rated Current: 10A
  • Diameter: 10mm / 0.4 inch
  • Length: 38mm / 1.5 inch


  • Made of premium material, it is durable and safe.
  • The alligator clip is very solid.
  • It is not easy to disconnect.
  • External insulation compatible with all the BNC oscilloscope.
  • Easy and convenient to use.


  • Attenuation Ratio : 1x / 10x
  • Input Resistance : 1MΩ (1x), 10MΩ (10x)
  • Input Capacitance : 85pF-135pF (1x), 18.5pF-22.5pF (10x)
  • Compensation Range : 10pF-30pF
  • Bandwidth : DC-100MHz  
  • Working Voltage : ≤300V DC (1x), ≤600V DC (10x)
  • Operating : -10℃~+50℃
  • Non-operating : -20℃~+75℃
  • Humidity : ≤85% relative humidity
  • Cable Length : 120cm