FW-4H Napco Firewolf Smoke Detector: Photoelectric, with 135º Heat Sensor

• The FW-4H 4-wire smoke detectors more accurately detect all types of fires for performance superior to previous photoelectric detectors.
• Built-In 135º F Heat Detector
• They come in attractive, low-profile, baseless units with dual LEDs for 360ƒ visibility.
• The detectors are 100% burn-in tested.
• Enable precision detection of even minute particles.