System Sensor 2WTR-B Photoelectric i3 Series Smoke Detector, 2-Wire, Thermal Sensor, Form Relay, White

Protect personnel and assets with reliable, easy-to-install fire detection. The System Sensor 2WTR-B photoelectric i3 series smoke detector combines dependable photoelectric sensing with an isolated thermal sensor to provide rapid, accurate detection in commercial and institutional environments. The two-wire, plug-in design with Stop‑Drop 'N Lock base accelerates installation and simplifies maintenance, while the integrated Form C relay and 85 dB sounder deliver immediate local alarm and straightforward integration into building security, surveillance, and fire monitoring systems. Remote maintenance signaling, drift compensation and smoothing algorithms reduce nuisance alarms and lower long-term service costs. At 5.3" diameter and a low-profile 2" height, the white ceiling-mount footprint blends into occupied spaces and supports common back box and direct-mount applications. Backed by a 3-year limited warranty and designed for wired connectivity, the 2WTR-B is ideal for schools, offices, healthcare facilities and other commercial sites that require dependable, network-friendly detection. Add this System Sensor combination detector to your security and monitoring strategy—order or contact sales for site-specific integration guidance.

• Simplifies installation with a plug-in i3 base and Stop‑Drop 'N Lock design, reducing labor time and on-site errors
• Photoelectric detection plus isolated thermal sensor for accurate early-fire sensing and fewer false alarms
• Built-in 85 dB sounder and Form C relay enable immediate on-site alerting and easy integration with security and monitoring systems
• Remote maintenance signaling, drift compensation and smoothing lower maintenance costs and streamline routine inspection
• Ceiling-mount design and in-line terminals support flexible mounting and fast pre-wiring for commercial deployments