Read Before You Install This Smoke Alarm

Read Before You Install This Smoke Alarm (continued)...

Never disconnect the power from an AC powered unit to stop an unwanted alarm. Doing so will disable the unit and remove your protection. In the case of a true unwanted alarm open a window or fan the smoke away from the unit. The alarm will reset auto- matically when it returns to normal operation. Never remove the batteries from a battery operated unit to stop an unwanted alarm (caused by cooking smoke, etc.). Instead open a window or fan the smoke away from the unit. The alarm will reset automatically.

Connect this unit ONLY to other compatible units. See “How To Install This Smoke Alarm” for details. Do not connect it to any other type of alarm or auxil- iary device. Connecting anything else to this unit may damage it or prevent it from operating properly.

Do not stand too close to the unit when the alarm is sounding. It is loud to wake you in an emergency. Exposure to the horn at close range may harm your hearing. When testing the unit, step back when the horn starts sounding.

Do not paint over the unit. Paint may clog the openings to the sensing chamber and prevent the unit from operating properly.

On Models 4120SB and 4120B Only:

The battery compartment will not close unless a battery is installed. This warns you the unit will not operate under DC power without a battery.

UNDERSTANDING THE INDICATOR LIGHTS AND ALARM HORN PATTERNS

	Normal Operation	Test Condition	Alarm Condition*
			(Initiating Unit)
AC Power	Constant Green LED	Constant Green LED	Constant Green LED
4120SB, 4120B, 4120	Flashing Red LED	Rapidly Flashing LED	Rapidly Flashing Red LED
	No Audible Alarm	Audible Alarm	Audible Alarm

DC Power	Green LED Off	Green LED Off	Green LED Off
DC Power	Flashing Red LED	Rapidly Flashing LED	Rapidly Flashing LED
4120SB, 4120B	Flashing Red LED	Rapidly Flashing LED	Rapidly Flashing LED
4120SB, 4120B	No Audible Alarm	Audible Alarm	Audible Alarm
	No Audible Alarm	Audible Alarm	Audible Alarm

NOTE: When power is applied, unit(s) may alarm momentarily.

*When any Smoke Alarm in an interconnected series triggers an alarm, its red LED will flash rapidly. The red LEDs will remain OFF on any remaining alarms in the series. This feature helps responders identify which unit(s) triggered the alarm.

4120 AC, 4120SB specifications

The BRK Electronics 4120SB and 4120AC are advanced smoke alarms designed to enhance safety in residential and commercial settings. These alarm models integrate innovative technologies and features that provide reliable performance and peace of mind to users.

The 4120SB model is a battery-operated smoke alarm, making it ideal for applications where hardwired alarms may not be feasible. Utilizing a photoelectric sensor, it is designed to detect smoldering fires, which often produce dense smoke without high flames. This increases the likelihood of early detection, allowing occupants crucial time to evacuate safely. On the other hand, the 4120AC is a hardwired option that connects directly to the building’s electrical system, ensuring uninterrupted power supply while incorporating a battery backup. This guarantees continuous operation, even during power outages.

Both models are equipped with a loud 85-decibel alarm, ensuring that residents are alerted promptly in case of smoke detection. The devices also feature a test/silence button, allowing users to easily test the functionality of the alarm or silence it in the event of a false alarm caused by cooking fumes.

Safety is further enhanced by the incorporation of a Tamper-resistant feature that prevents unauthorized removal of the alarm from its mounted location. The alarm also includes a LED indicator that provides a visual cue of the unit’s operational status. When the unit is powered on and functioning correctly, the green LED will blink periodically. In contrast, a continuous red LED indicates an active alarm condition.

Both the 4120SB and 4120AC are designed for user-friendly installation. The units come with clear instructions and mounting hardware, allowing homeowners and professionals to easily install them in their desired locations. The compact design ensures that they can fit seamlessly into a variety of interiors.

Overall, the BRK Electronics 4120SB and 4120AC represent robust solutions for smoke detection. Their integration of advanced photoelectric technology, user-friendly features, and essential safety mechanisms make them essential components of any fire safety strategy, ensuring that homes and businesses are better protected against the threat of fire. Investing in these smoke alarms not only meets safety regulations but also fosters a proactive approach to fire safety that can save lives.