System Sensor MOD2W 2-Wire i3 Smoke Maintenance Module

Streamline smoke detector maintenance and minimize nuisance alarms with the System Sensor MOD2W 2-Wire i3 Smoke Maintenance Module. Designed for commercial and institutional fire and security applications, this loop test/maintenance module interprets i3 detector remote maintenance signals, provides clear visual indication and activates an output relay so maintenance teams can respond quickly and prevent detector failures. The MOD2W supports up to twelve 2-Wire i3 detector models (2W-B, 2WT-B) plus one 2WTR-B for scalable deployments and integrates seamlessly into existing alarm control panels that accept this module type. With EZ Walk loop test initiation, Style D/Class A wiring support, and a compact 6" x 6" x 1" box-mount form factor, installation and commissioning are fast and cost-effective. Operating on a 35V DC input and drawing 300mA, the MOD2W delivers reliable performance across a 32°F to 122°F range. Ideal for fire alarm, security and monitoring systems where proactive maintenance and uninterrupted operation are priorities. Add the System Sensor MOD2W to your fire and surveillance infrastructure to simplify detector upkeep and improve system uptime—contact sales to integrate it into your next project.

• Streamlines maintenance with proactive cleaning alerts and visual indication to reduce false alarms and downtime
• Interprets i3 detector remote maintenance signals and activates an output relay for immediate service response
• Supports up to twelve 2-Wire i3 detectors plus one 2WTR-B for scalable loop integration
• Initiates EZ Walk loop testing and provides Style D/Class A wiring for reliable monitoring and simplified commissioning
• Compact box-mount design (6" x 6" x 1") with 35V DC input and 300mA current for easy panel integration
• Built by System Sensor for dependable compatibility with fire, security and surveillance systems