2155/40-01 Security Interface Module Unit

Module Feature

2155/40-01 is C-Cure 2155 access control interface monitoring module.

It is designed to collect door contact status, request-to-exit and auxiliary dry contact signals, transmits status data to main access controller. It supports 24VDC supply, surge protection circuit for field wiring, suitable for indoor door station installation. It monitors door open, door forced and door held alarm events, widely stocked as maintenance spare for commercial building, factory and campus access control cabinet.

Working principle

Dry contact signal from door switch or REX button is captured by this module.

Internal circuit converts contact on/off state into digital signal and sends to access controller for logic judgment. When abnormal door status occurs such as door forced open, it triggers alarm event and uploads to security workstation. It continuously monitors wiring integrity and reports circuit fault when loop is abnormal.

Onboard components

Signal input circuit, surge suppression component, communication interface chip, status indicator, terminal block and plastic insulated housing.

LED indicators

Front LEDs indicate power, signal input trigger and communication fault alarm.

Hardware self‑diagnosis

Built-in supervision detects input circuit open/short, communication loss and power undervoltage. Configuration and fault diagnosis are completed by C-Cure dedicated security management software.

Programming software

C-Cure security management software, used for I/O mapping, alarm threshold setup and event log reading.

Electrical & Process Parameters

Model:2155/40-01 Brand:C-Cure Device type:Access control interface monitoring module Function:Door contact, REX signal acquisition and abnormal door status alarm transmission for access control system

Mechanical & Structure

Mounting:Cabinet backplate mounting Protection class:IP30 Housing:Plastic insulated module housing

Environmental

Operating temperature:0℃ ~ +50℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing

Certification:UL, CE Status:Original security access spare

Installation

Power off module before replacement.

Check 24VDC power wiring, door contact and REX dry contact wiring, confirm communication bus connection, test door status and alarm upload function after commissioning.

Interface

24VDC power terminal, dry contact input terminal, communication bus terminal.

Diagnostic

No door status change: Contact wiring reversed, switch damage or input channel fault. No alarm upload: Communication bus open, controller offline or wrong I/O mapping. Intermittent signal: Loose terminal, surge damage or wire aging.

Product Brief

2155/40-01 interface module, C-Cure 2155 door status monitoring spare for building access control security system replacement.