ZDL-4R 4 Door Access Control Relay

ZDL-4R 4 Door Access Control Relay

The ZDL-4R 4 Door Access Control Relay is a device designed to work in conjunction with ZDL Intercom Systems stations. Access control systems device to manage and control locking and unlocking of four different doors connected to ZDL Systems IP Intercom Door Stations.

Features RS485 Protocol to Interact with Host Device

It acts as an intermediary between the ZDL Intercom Door Stations (Controller) and the electronic door locks.

Key Features

• • Multi-Door Control – Supports up to four doors, each with its own lock relay.
  • Relay Output – Provides dry contact relay outputs to activate electric locks, such as magnetic locks, electric strikes, or bolt locks.
  • Input Control – Receives signals from an host system, and RFID readers.
  • Power Management – Requires power supply options for locks, reducing load on the controller.
  • Time Delay Settings – Allows configuration of lock engagement time (e.g., 1-15 seconds).
  • Fail-Safe and Fail-Secure Support – Compatible with both lock types, depending on security needs.

Applications

• • Office buildings, commercial properties, and government facilities.
  • Multi-tenant residential buildings.
  • Secure areas in data centers and research labs.
  • Schools and universities with restricted access zones.

Device Specification

• • Input Voltage: DC12V
  • RS485 A, B, GND connect with Host Station
  • RELAY1: NC/NO/COM
  • RELAY2 NC/NO/COM
  • RELAY3 NC/NO/COM
  • RELAY4 NC/NO/COM
  • IN1 ~ 4 Reserved

Got Application Customization Questions?

• • Chat With One Of Our Qualified Agents online between the hours of 9:00Am – 5:00Pm CST
  • Email our Sales Department to get an answer within 24-hours
  • Contact Sales By Phone between the hours of 9:00Am – 5:00Pm to get instant recommendation

Included Items & Accessories

• • 1 ZDL-12CRD
  • 1 Power connector cable
  • 1 Relay wire
  • 1 RS85 Signal connection wire
  • Mounting bracket
  • Installation screws
  • Installation instructions

Manufacturer Warranty

• • 1 Year System & Harware Limited Warranty