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Combination Detectors

Combination detectors pair smoke and carbon monoxide (CO) sensing in a single, space-saving unit to protect homes and buildings. Ideal for property managers, contractors, and facility teams, these devices simplify installation and maintenance while delivering reliable life-safety alerts. Choose from hardwired, battery-powered, and smart-connected models with interconnect capability, UL-listed certification, and battery backup to meet safety codes and reduce risk.

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91 products found. 12 displayed.

Napco FW-4-H-E Conventional 4-Wire Photoelectric Smoke and Heat Detector with Base
Napco Security Technologies
Napco FW-4-H-E Conventional 4-Wire Photoelectric Smoke and Heat Detector with Base
FW-4-H-E
In Stock
$94.03
Napco PSMKCO Prima Combo Smoke CO Detector
Napco Security Technologies
Napco PSMKCO Prima Combo Smoke CO Detector
PSMKCO
In Stock
$111.65
Potter PAD200-PCHD Photoelectric Smoke / Heat / Carbon Monoxide Detector
Potter Electric Signal, LLC
Potter PAD200-PCHD Photoelectric Smoke / Heat / Carbon Monoxide Detector
PAD200-PCHD
In Stock
$229.73
Potter PAD300-PCD Photoelectric Smoke and Carbon Monoxide Detector, Low profile, Wall-mount, White
Potter Electric Signal, LLC
Potter PAD300-PCD Photoelectric Smoke and Carbon Monoxide Detector, Low profile, Wall-mount, White
PAD300-PCD
In Stock
$149.10
Potter PAD300-PHD Analog Photoelectric Smoke and Heat Detector
Potter Electric Signal, LLC
Potter PAD300-PHD Analog Photoelectric Smoke and Heat Detector
PAD300-PHD
In Stock
$67.67
Ring Alarm Smart Smoke and CO Detector, Wireless, 3V Lithium Battery Included, Non-Rechargeable, Z-Wave, White (4SS1S8-0EN0), (Replaces 4SC2S90EN)
Ring
Ring Alarm Smart Smoke and CO Detector, Wireless, 3V Lithium Battery Included, Non-Rechargeable, Z-Wave, White (4SS1S8-0EN0), (Replaces 4SC2S90EN)
B07M93Z1NT
In Stock
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Silent Knight SK-FIRE-CO-W Addressable Combination Fire/CO Detector, White
Silent Knight by Honeywell
Silent Knight SK-FIRE-CO-W Addressable Combination Fire/CO Detector, White
SK-FIRE-CO-W
In Stock
$246.91
Silent Knight SK-PHOTO-T-W Intelligent Photoelectric Smoke Detector and Temperature Sensor
Silent Knight by Honeywell
Silent Knight SK-PHOTO-T-W Intelligent Photoelectric Smoke Detector and Temperature Sensor
SK-PHOTO-T-W
In Stock
$109.90
Silent Knight SK-PTIR-W Multi-Criteria Detector, White
Silent Knight by Honeywell
Silent Knight SK-PTIR-W Multi-Criteria Detector, White
SK-PTIR-W
In Stock
$123.19
System Sensor 2WT-B Photoelectric i3 Series Smoke and Heat Detector, 2-Wire, 135F Fixed Thermal Sensor, White
System Sensor
System Sensor 2WT-B Photoelectric i3 Series Smoke and Heat Detector, 2-Wire, 135F Fixed Thermal Sensor, White
2WT-B
In Stock
$61.02
System Sensor 4WTA-B Photoelectric i3 Series Smoke Detector, 4-Wire, with Thermal Sensor and Built-In Sounder, White
System Sensor
System Sensor 4WTA-B Photoelectric i3 Series Smoke Detector, 4-Wire, with Thermal Sensor and Built-In Sounder, White
4WTA-B
In Stock
$79.42
System Sensor 4WTAR-B Photoelectric i3 Series Smoke Detector, 4-Wire, Thermal Sensor, Built-In Sounder, Form Relay, White
System Sensor
System Sensor 4WTAR-B Photoelectric i3 Series Smoke Detector, 4-Wire, Thermal Sensor, Built-In Sounder, Form Relay, White
4WTAR-B
In Stock
$89.68
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