Conduit & Fittings

The D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions. Plug-in sensor head off - Two DPDT relay contacts - High contrast terminal designations - Built-in short circuit protection - Increased wiring space - Easy access Test/Reset button

Accessories add functionality to the duct smoke detection system by allowing quick, convienient inspections at eye level and effective audible and visual notification options

Metal exhaust tube - Duct width up to 1ft

Replacement Photoelectric Sensor

Accessories add functionality to the duct smoke detection system by allowing quick, convienient inspections at eye level and effective audible and visual notification options

Replacement air filter

Power board component for D4120 & D4120W

Replacement dust filte

Accessory magnet for testing sensor head

Epoxy encapsulated multi-voltage relays, single pole double throw that use a red LED as a visible indication of relay coil energization - Mounting track and hardware - Reliable and robust design - Easy and flexible installaion

Exhaust tube for ducts

The most versitile and easy-to-use horn/strobe in the industry - Universal mounting plate - Rotary switch for horn tone and volume - Field selectable Candela settings - Selectable 12V or 24V operation - Tamper resistant construction - Plug-in design

The DUCTSD 4-wire photoelectric duct smoke detector features a pivoting housing that fi ts both square and rectangular footprints and mounts to round or rectangular ductwork - Cover integrated smoke test port - High contrast terminal designations - Built-in short circuit protection from wiring errors - -4°F to 158°F (-20°C to 70°C) Operating

12 and 24 volt operation - High and low volume settings - Temporal and non-temporal tones - Mounts to single gang back box - Compatible with MDLsync module - Ceiling or wall mounting - 1W LED Flashlight - Red warning light -  Strong, pivoting magnetic base - 100,000 hour LED life - Fold-away, swivel hook - 32°F to 120°F (0°C to 49°C) Operating

White or plastic housing - Weatherproof NEMA 4X (IP56) case - Field-selectable candela settings - Automatic selection of 12- or 24-volt operation at 15 and 15/75 candela - Rotary switch for horn tone and three volume selections

Approved for indoor & outdoor use - Low current draw - High dB output - 8" diameter - 24 VDC Operating

Metal sampling tube - Duct width 42 Inches

Metal sampling tube - Duct width 34 Inches

The D4120W 4-wire photoelectric duct smoke detector features a waterproof, pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork - Backward compatible with existing accessories - Two DPDT relay contacts - Built-in short circuit protection - Field selectableconfiguration settings - Easy access Test/Reset button - High contrast terminal designations - Plug-in sensor - Increased wiring space