Description

LNL-1320-S3B Series 3 Dual Reader Interface Module

Technical Specifications

• Product Model: LNL-1320-S3B
• Brand: Lenel
• Warranty: One Year
• Input Voltage: 12–24 VDC ±10% wide range DC supply
• Operating Temperature: 0°C to +50°C
• Storage Temperature: -40°C to +85°C
• Response Time: ≤ 100ms access credential verification and relay actuation
• Protection Class: IP20 for cabinet enclosure mounting
• Accuracy Class: N/A (access control logic board)
• Output Frequency: DC relay switching, compatible with 50/60Hz building power grid
• Rated Current Range: Max 330mA @24VDC; 5A per Form-C relay contact at 28VDC
• Communication Interface: 2-wire RS485 multi-drop bus
• Supported Protocols: Wiegand, Clock/Data, OSDP (Open Supervised Device Protocol) with AES encryption
• Overload Capacity: Per-input EOL circuit protection, relay short-circuit and reverse power polarity safeguard
• Dimensions: 152mm × 203mm × 25mm
• 

Product Overview

The LNL-1320-S3B is a Series 3 dual door reader interface module designed for Lenel OnGuard enterprise access control management systems, serving as the core field hardware bridge between the intelligent system controller (ISC) and physical door access peripherals. It connects two independent card readers or biometric scanners, collects door contact status, request-to-exit button signals and cabinet tamper alerts, and triggers lock/unlock actions via onboard relay outputs. This module resolves common access control deployment pain points including limited door expansion capacity, insecure unencrypted reader communication, inability to monitor door forced-open status, and complex multi-device wiring layout in commercial buildings, data centers and industrial plant security zones. The built-in OSDP secure channel encryption blocks credential data interception risks, while supervised input circuits eliminate false alarms caused by broken field cables.

Security system integrators, facility management engineers, IT security administrators and critical infrastructure protection supervisors benefit from its long-distance bus transmission capability and offline access retention function, which maintains basic door access rules during upper controller communication outages. Configurable fail-safe/fail-secure relay modes align with fire and life safety codes, and field-upgradable firmware extends service compatibility with evolving reader and biometric hardware generations.