On eBay Now...ESI-50 COMMUNICATION SERVER PBX With Power Supply with 7 48 BUTTON PHONES For Sale
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
ESI-50 COMMUNICATION SERVER PBX With Power Supply with 7 48 BUTTON PHONES:
$210.00
The ESI-50 Communication Server PBX is a United States-made phone switching system designed for office use. It comes with 7 48-button phones, making it a convenient and efficient choice for business communication needs. The power supply included ensures reliable functionality, while the ESI brand reputation guarantee's quality and performance. This system is perfect for businesses looking for a reliable and high-quality telecom solution.This lot was fully working and functional when removed from office--they upgraded to another system.
All 7 phones have stands.
ESI-50 COMMUNICATION SERVER PBX With Power Supply with 7 48 BUTTON PHONES
$210.00
ESI ESI-50 Conventional Communications Server System MOH Feature
$150.00
ESI 50 Communications Server Phone System, Lc4758-22
$550.00
Popular Tutorials
Alarms and Indicator Circuit diagrams- Power supply failure alarm
- Theft preventer alarm
- Rain Alarm
- A simple electronic buzzer
- Water Level Indicator with alarm
- Stereo Channel Selector
- Low cost intercom using transistors
- Infrared Head Phones
- Use the CD-ROM drive as a audio CD player without the computer
- Audio Visual Indicator for Telephones
- Ultrasonic pest repellent
- Charge Monitor for 12V lead acid battery.
- Wiper Speed Control
- Dome Light Dimmer for Cars
- Car anti theft wireless alarm.
- Control electrical appliances using PC
- Simple Analog to Digital Converter
- PC based Frequency Meter
- 7 segment rolling display using PC
- Electronic Scoring Game
- JAM(Just A Minute) Circuit
- Flashy Christmas Lights
- TV remote control blocker
- Light Flasher (blinking lights)
- Automatic Dual output Display
- Emergency Light
- Automatic Room Lights
- Running Message Display
- Automatic Speed Controller for fans & Coolers
- Soft Button type Motor Direction Controller
- Super simple stepper motor controller
- Discrete component motor direction controller
- Negative supply from single positive supply
- Self switching Power Supply
- Ultra low drop linear voltage regulator
- Car anti theft wireless alarm.
- Long range FM transmitter
- Remote control using VHF modules
- 40 meter Direct Conversion Receiver
- Remote control using VHF modules
- Remote control using telephone
- A simple Remote control Tester
- Clap Activated Remote
- Radio Remote Control using DTMF
- Ultrasonic switch
- Magnetic proximity sensors
- Dew sensor
- Color Sensor
- Metal Detector
- Optical toggle switch using a single Chip
- Telephone Ringer using 556 dual timers
- Two line intercom plus a telephone changeover switch
- Telephone line based audio muting and light on circuit
- Having secrecy in parallel telephones
- Telephone call meter using calculator & COB
- High Resistance Voltmeter
- A simple Remote control Tester
- Contactless Mains Voltage Indicator
- Zener Diode Tester