System Sensor 4WTAR-B Photoelectric i3 Series Smoke Detector, 4-Wire, Thermal Sensor, Built-In Sounder, Form Relay, White

Designed for dependable, low-maintenance protection, the System Sensor 4WTAR-B photoelectric combination detector delivers fast, accurate smoke detection with built-in audible notification and relay control. As a 4-wire i3 series device, this ceiling-mount detector combines a photoelectric sensor with an 85 dB sounder and a Form C relay to provide both local alarm and seamless integration into building security and monitoring systems. Its installer-friendly plug-in base, in-line terminals and Stop-Drop ’N Lock™ mounting cut installation time and simplify service calls, while drift compensation and smoothing algorithms minimize nuisance alarms from dust or RF interference—reducing false trips and costly downtime. Operating on 24V DC and UL Listed, the 4WTAR-B supports remote maintenance signaling and provides clear red/green LED status for quick visual checks during power-up, standby or alarm. Ideal for commercial, healthcare, education and retail sites that require reliable surveillance and life-safety monitoring, this System Sensor combination detector helps protect people, property and operations. Specify the 4WTAR-B for your next fire detection project or contact us for integration guidance.

• Reduces nuisance alarms with drift compensation and smoothing algorithms for reliable, long-term monitoring
• Simplifies installation and maintenance with a plug-in base, in-line terminals and Stop-Drop ’N Lock™ mounting
• Integrated 85 dB sounder and Form C relay deliver immediate local notification and easy integration with security systems
• Photoelectric sensing provides fast, accurate smoke detection ideal for commercial and institutional environments
• Remote maintenance signaling and clear red/green LEDs streamline inspections and reduce onsite service time
• UL Listed and backed by a 3-year limited warranty for dependable performance in life-safety applications