Description

1. Product Title

JEC‑21M‑2‑ Marine Multi‑Channel Alarm Input Module

2. Product Overview

The JEC‑21M‑2 is marine‑grade multi‑channel binary‑alarm‑input module. It collects dry‑contact alarm‑status signals from ship‑board field sensors and transmitters, performs signal filtering and debounce, transmits data to central alarm unit via internal bus. Designed for cabinet‑rack installation, it adapts to marine vibration, humidity and salt‑spray environments. It expands alarm‑signal‑acquisition capacity for vessel central‑alarm‑monitoring systems.

3. Technical Specifications

• Brand: JRCS
• Model: JEC‑21M‑2
• Warranty: One Year
• Condition: 100% New & Original
• Type: Marine multi‑channel binary‑alarm‑input module
• Input: Multi‑channel dry‑contact alarm‑status inputs
• Communication: Internal system bus
• Power Supply: 24 VDC
• Mounting: DIN‑rail / rack‑mount installation
• 

4. Application Scenarios

• Ship‑board Central‑Alarm‑System Cabinets: Alarm‑signal‑acquisition expansion module for vessel engine‑room monitoring racks.
• Off‑shore‑Platform Auxiliary‑Monitoring Cabinets: Status‑input module for offshore‑installation alarm‑monitoring systems.
• Vessel‑Automation‑Retrofit Projects: Spare‑part for expanding signal‑input channels during marine‑system‑upgrade work.