CRC220-4 Online Four Door Controller

Name: CRC220-4 Online Four Door Controller
Brand: Nortech Control Systems Ltd
SKU: CRC220-4
Availability: InStock

CRC220-4

'4 Doors Controlled From a Single Panel'

The CRC220-4 controllers is part of a range of versatile modular on-line access control panels suitable for controlling access points such as doors and vehicle barriers by validating credentials such as cards, key fobs and vehicle tags.

Request Quote Download Datasheet

Product features & benefits

These controllers are components of an online access control system linked to Norpass3 Access Control Management Software via either TCP/IP or RS485.

The CRC220-4 can be used to control access through up to four doors or barriers with read-in control and free exit, while supporting a wide range of managed access control features and a comprehensive range of interface formats. The enclosure houses 2 two-door interface modules plus an integral power supply unit.

Benefits

Easily managed using simple centralised management of data
Choice of mix and match module types enables cost-effective network structure
Support for a wide range of card formats and card reader interfaces makes it the ideal choice for enhancing an existing access control system
Security levels can be tailored to customer needs using optional security features
Improved visitor card management when used with our card capture reader
Meets demanding customer requirements through a choice of enclosures with tamper alarms fitted as standard plus features such as fire alarm control input, individual door alarms and configurable inputs and outputs.

Specifications

Electrical

Supply Voltage	Enclosures: 240V AC PCB: 12V DC
Current Requirement	100 mA quiescent, 230 mA while reading (both readers)
Reader Supply	12V DC (100 mA max.) 5V DC option

Physical

Local settings	DIP switches for setting node identity
Dimensions (mm)	PCB: 115 x 120 x 35 (H x W x D) Plastic enclosure: 325 x 300 x 135 (H x W x D) Metal enclosure: 330 x 300 x 105 (H x W x D)
Cable Termination	Plug-in screw terminal blocks

Environmental

Operating Temperature	0°C to 40°C
Storage Temperature	-20°C to 70°C
Relative Humidity	95% non-condensing

Capacity

Sequential Mode	65,000 sequential card numbers (0 - 19,999), 1,700 events
Random Mode	8,000 random card numbers, 1,300 events

data communications

Management Interface	RS485 or TCP/IP depending upon model

Inputs

Readers	2 x 5-wire reader interfaces for Clock & Data (ABA Track 2) & Wiegand formats
Arming	2 independent, ground activated inputs. Open-circuit arming.
Door Open Monitor	2 independent ground activated inputs for monitoring door open status.
Request to Exit	2 independent ground activated inputs.
Tamper Input	Ground activated input from tamper switch on housing (where applicable).

Outputs

Latch Relays	2 independent latch relays with change-over contacts rated at 2A at 30V DC.
Auxiliary Output	2 independent open-collector outputs for auxiliary control such as card capture.
Tamper Alarm	Open-collector output (300mA), activated when tamper alarm is active.
Door Alarm	Door 1 alarm is shared with the tamper alarm output. On CR220, door 2 alarm output is a separate open-collector output (300mA).
Assignable Output	Open-collector output controlled from Norpass3 in online operation.

Cabling

CRC200 to reader	Belden 9536 or equivalent (100m maximum)
RS485 comm’s	Belden 9729 or equivalent (1,200m maximum overall length)

High-Density Door Control for Multi-Entrance Commercial Buildings

The CRC220-4 maximises efficiency in installations requiring read-in access control with free-exit across multiple doors—such as office building corridors, warehouse zones, shopping centre service entrances, or educational facility wings.

By controlling four doors from a single enclosure, installers reduce hardware costs, cabinet space, and wiring complexity compared to individual single-door controllers.

Retail distribution centres commonly deploy CRC220-4 units to manage multiple loading bay pedestrian doors, while corporate campuses use them for floor-by-floor corridor access.

The controller's four independently monitored doors each feature door-held alarms and forced-entry detection, enabling security teams to respond quickly to propped doors or intrusion attempts across busy facilities.

Frequently asked questions

What's the difference between CRC220-4 and CRC221-2?

The CRC220-4 controls four doors with read-in and push-button/free-exit operation, while the CRC221-2 controls two doors with full read-in/read-out capability. Choose based on whether you need exit credential verification.

How are the four doors configured internally?

The CRC220-4 enclosure houses two CRC220 two-door modules sharing the integral power supply. Each module controls two doors with independent monitoring, relay outputs, and alarm capabilities.

Can different doors have different access schedules?

Yes, Norpass3 allows individual access level and time period configuration for each of the four doors, enabling zone-based access policies within a single controller.

What locking devices can the CRC220-4 power?

The integral 3A 12V PSU provides four individually fused 12V DC outputs capable of powering standard maglocks or electric strikes. These outputs can be fire-alarm linked for emergency release.

Is anti-passback available across all four doors?

Anti-passback operates per controller with configurable reset times. For read-in/free-exit configurations, soft anti-passback prevents sequential same-card presentations at the same reader.

Case studies