Security Solution

Intrusion
Detection

Every door, window, and entry point — covered. Our smart sensor network detects unauthorized access the moment it happens and dispatches 24/7 professional monitoring response. Manage everything from one app, anywhere.

Smart Sensors
Instant Alerts
24/7 Monitoring
App Control

Complete Perimeter Protection

Multi-layered detection technology that leaves no gap in your security coverage.

Smart Sensor Network

Advanced wireless sensors monitor every door, window, and entry point with military-grade detection accuracy. Tamper-proof devices that communicate instantly with your central hub.

Instant Alert System

Receive real-time push notifications, SMS, and email alerts the moment unauthorized access is detected. Zero delay between detection and notification.

24/7 Professional Monitoring

Our certified monitoring center dispatches emergency response around the clock. Trained operators verify threats and coordinate with local authorities in seconds.

Complete App Control

Arm, disarm, and monitor your entire security system from a single mobile app. View sensor status, activity logs, and manage zones from anywhere in the world.

Solutions for Every Property

Tailored intrusion detection systems designed for properties of any size and complexity.

Residential

Protect your family with perimeter sensors, glass-break detectors, and motion-activated zones that adapt to your daily routine.

  • Entry point monitoring
  • Glass-break detection
  • Motion zones
  • Pet-immune sensors

Commercial

Secure offices, retail spaces, and warehouses with multi-zone coverage, employee access scheduling, and after-hours intrusion detection.

  • Multi-zone configuration
  • Schedule-based arming
  • Duress codes
  • Silent alarms

Enterprise

Campus-wide intrusion detection across multiple buildings with centralized management, integration APIs, and compliance-ready audit trails.

  • Campus-wide coverage
  • Central management
  • API integration
  • Compliance reporting

Technical Specifications

Enterprise-grade hardware and monitoring built for reliability.

Up to 300ft
Sensor Range
< 10 seconds
Response Time
5+ years
Battery Life
Up to 128
Zones Supported
Encrypted wireless
Communication
72-hour battery
Backup Power
UL-Listed center
Monitoring
Z-Wave / Zigbee
Protocols

Why Choose Our System

Instant Detection

Sub-second threat detection with zero false alarm technology ensures you only get alerts that matter.

Remote Management

Full system control from any device, anywhere. Arm, disarm, and monitor in real time.

Encrypted Communication

All sensor data is encrypted end-to-end, preventing signal jamming and interception attacks.

Verified Response

Our monitoring center verifies every alarm before dispatching, reducing false alarm fines and ensuring rapid response.

Entry Point Coverage

Comprehensive monitoring of doors, windows, garage entries, skylights, and any potential access point.

Professional Installation

Expert technicians design and install your system for optimal coverage with minimal disruption.

Frequently Asked Questions

What is the best alarm system for a commercial building in NJ?
The best commercial alarm system depends on the building type and security needs. G. Leff Security installs smart intrusion detection systems with 24/7 professional monitoring, instant mobile alerts, and integration with access control and CCTV. We use Honeywell and other enterprise-grade platforms for commercial properties across New Jersey.
Do alarm systems work with security cameras and access control?
Yes, modern alarm systems integrate with CCTV cameras and access control for a unified security platform. When an alarm triggers, cameras automatically record the event and access points can lock down. G. Leff Security specializes in integrated security systems that combine all three for complete property protection.
Does G. Leff Security offer 24/7 alarm monitoring?
Yes, G. Leff Security provides 24/7 professional alarm monitoring with instant mobile alerts. The company owners personally handle after-hours emergency calls. G. Leff has been a licensed NJ security contractor since 1985, serving properties from Boston to Virginia.

Ready to Secure Your Property?

Get a free security assessment and customized intrusion detection plan for your property. Our experts will identify vulnerabilities and recommend the right solution.