System Sensor – D4120 – Universal 4 Wire Photoelectric Smoke Detector – 3 lbs Multipack Quantity 1

The System Sensor D4120 Universal 4 Wire Photoelectric Smoke Detector is ideal for a range of applications, from residential to commercial use. This detector is designed to detect smoke from a wide range of sources with two DPDT Form-C relay contacts, allowing for better control and faster response. The D4120 operates on 24 VAC/ VDC or 120 VAC power for optimal performance. This detector is suitable for direct wire connection, and is lightweight at 3.3 lbs. The System Sensor D4120 comes with several features to make installation easy and detection efficient. With two Form-C contacts, the D4120 is able to switch two low-voltage electrical loads independently, including the use of a smoke detector control panel. Non-volatile memory stores settings to prevent resetting following a power failure, and user sensitivity adjustments are also possible with the D4120. The photoelectric smoke sensor is designed for square or rectangular duct smoke detectors, such as the System Sensor Firex 2650760 and the Dwyer 832. The System Sensor D4120 provides a reliable and secure tool for detecting smoke in a range of applications. Ideal for both residential and commercial environments, it features a lightweight design and reliable performance. The 24/115/1/60 volts detector is suitable for direct wire connection and supports two Form-C contacts. With features such as a non-volatile memory and user sensitivity adjustment, the System Sensor D4120 is an essential tool for a range of environments.