jshej 238

jshej 8 Zones Wired and 16 Wireless PSTN Alarm System with Keyboard

Model: 238

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your jshej 8 Zones Wired and 16 Wireless Control Panel PSTN Alarm System with Keyboard (Model 238). Please read this manual thoroughly before using the system to ensure proper functionality and safety.

2. Product Overview

The jshej Model 238 is a versatile security alarm system designed for comprehensive protection. It features 8 wired defense zones and supports up to 16 wireless defense zones, offering flexible deployment options for various environments. The system includes a control panel with an integrated keyboard, remote controls, and essential accessories for setup.

Complete jshej Model 238 alarm system kit with control panel, remotes, and manual

Figure 1: Complete jshej Model 238 alarm system kit contents.

3. Setup and Installation

3.1 Package Contents

  • 1 x Main Control Panel Motherboard
  • 1 x Keyboard
  • 1 x Transformer
  • 1 x User Manual
  • 1 x Attachment Bag (including telephone line, terminal resistor bag, and rod antenna)
  • 2 x Remote Controls (as shown in Figure 2)
Remote controls and other accessories included with the alarm system

Figure 2: Remote controls and accessories.

3.2 Wiring the Control Panel

The main control panel features terminals for wired connections. Ensure all connections are secure and follow local electrical codes.

Main circuit board of the jshej alarm control panel

Figure 3: Main control panel circuit board.

Close-up of wired zone terminals on the main board

Figure 4: Close-up of wired zone terminals.

Example wiring with resistors for wired zones

Figure 5: Example wiring with resistors for wired zones.

The system includes a charging circuit and can be equipped with a built-in DC12V sealed lead-acid battery (not included) to ensure uninterrupted power during outages.

3.3 Initial Configuration

Various programming settings can be made for the system, including:

  • Alarm sound mode
  • Defense zone type
  • Recording and monitoring settings
  • Remote control configuration
  • Alarm phone numbers (up to 6 fixed or mobile numbers)
  • Alarm center phone numbers (up to 4 numbers)
  • Telephone line detection settings

The installer password and master password are each six digits and can be modified independently. Up to 15 sub-passwords (including one temporary and one coercion password) can be set for enhanced security.

4. Operating Instructions

4.1 Deployment Methods

The system supports 8 deployment methods:

  1. External Deployment
  2. Home Deployment
  3. Delayed Deployment
  4. Remote Deployment
  5. Single Zone Deployment
  6. Mandatory Deployment
  7. Timed Deployment
  8. Remote Deployment (via phone)

4.2 Disarming Methods

The system offers 6 ways to disarm:

  1. Single Zone Disarm
  2. Password Keyboard Disarm
  3. Remote Disarm
  4. Alarm Disarm
  5. Timed Disarm
  6. Remote Disarm (via phone)

Video 1: Demonstration of disarming the alarm system using a remote control and the keypad.

4.3 Defense Zone Types

The system supports 8 types of defense zones:

  1. Real-time Defense Zone
  2. Delayed Defense Zone
  3. 24-hour Defense Zone
  4. Perimeter Defense Zone
  5. Fire Alarm Defense Zone
  6. Gas Defense Zone
  7. Anti-interference Defense Zone
  8. Doorbell Defense Zone

4.4 Keyboard Functions

The keyboard allows direct generation of threatening, emergency, fire alarm, and rescue signals. It also provides visual feedback for AC power status and system failures.

4.5 Remote Control Operations

Remote controls can be used for quick deployment, disarming, and emergency alarm operations.

4.6 Alarm Features

  • When an alarm is triggered, the system performs a circular dial to the programmed phone numbers.
  • Upon receiving an alarm, the system can monitor the scene and activate the on-site siren.
  • Built-in recording module allows for 10-20 seconds of voice recording for prompts and alarms.
  • Customizable alarm delay and whistle time.
  • The fire alarm sound can be distinguished from the theft alarm sound.
  • Alarm can be linked with relay output for seamless connection with monitoring systems.

5. Maintenance

To ensure the longevity and optimal performance of your alarm system, regular maintenance is recommended:

  • Keep Clean: Regularly wipe the control panel and keyboard with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
  • Power Supply: Ensure the system is connected to a stable AC220V ± 10% power supply. If using a backup battery, check its charge status periodically.
  • Telephone Line: The system features telephone line fault detection. If a fault is detected, the host will alarm locally. Address any telephone line issues promptly to ensure alarm reporting functionality.
  • System Integrity: The system is equipped with a "watchdog" function to prevent crashes. If you experience persistent issues, refer to the troubleshooting section.

6. Troubleshooting

This section addresses common issues you might encounter with your alarm system.

6.1 Common Issues and Solutions

ProblemPossible CauseSolution
System not powering onNo AC power, faulty transformer, or depleted backup battery.Check AC power connection. Verify transformer functionality. Ensure backup battery is charged or replaced if necessary.
Alarm not reporting via phoneTelephone line fault, incorrect phone numbers programmed, or line grabbing issue.Check telephone line connection. Verify programmed alarm numbers. The system has a line grabbing function to prioritize alarm dialing.
False alarmsIncorrect defense zone type settings, faulty sensor, or environmental factors.Review defense zone settings. Test individual sensors. Ensure sensors are not triggered by pets, drafts, or other environmental disturbances.
Remote control not workingDepleted remote battery, remote out of range, or not properly paired.Replace remote battery. Ensure you are within the effective range. Re-pair the remote control with the system if needed (refer to programming instructions).
Keyboard not respondingLoose connection, system crash, or power issue.Check keyboard cable connection. If the system is unresponsive, try a power cycle (disconnect AC and battery, then reconnect).

6.2 AC Power Failure and System Failure Display

AC power failure and system failures are directly displayed on the keyboard, allowing for quick identification of issues.

7. Specifications

The following table outlines the technical specifications of the jshej Model 238 alarm system:

Table of product specifications for the jshej alarm system

Figure 6: Product Specifications.

FeatureSpecification
Power SupplyAC220V ± 10%
Power Consumption≤1.5W
Static Consumption Current≤ 50mA
Siren Output12VDC, ≤650mA
Power Output12VDC~15VDC
Wireless Frequency433/315MHz
Working Temperature-10°C ~ 55°C
Working Humidity40% ~ 70%
Weight3KG
Size of Iron Box (without iron box)255mm × 235mm × 70mm
Size of Keypad159mm × 138mm × 33mm

8. Warranty and Support

For warranty information, please refer to the documentation provided at the time of purchase or contact your seller directly. If you require technical assistance or have questions not covered in this manual, please reach out to the product seller or manufacturer's customer support.

9. User Tips

  • Backup Power: Consider installing a DC12V sealed lead-acid battery for backup power to ensure continuous operation during power outages.
  • Accessory Compatibility: The system is expandable. If you wish to add more sensors or an additional keyboard, ensure they are compatible with the Model 238 and follow the pairing instructions carefully.
  • Regular Testing: Periodically test your alarm system, including sensors and communication features, to ensure it is functioning correctly.

10. Frequently Asked Questions (FAQ)

Q: Is an instruction manual available with the product?

A: Yes, a user manual is included with the product package to guide you through the setup and operation.

Q: Can I add an additional keyboard to the system?

A: The system supports multiple input devices. Please consult the setup guide or contact customer support for compatible accessories and connection instructions.


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