The module interconnects detector sounders and supports synchronized Temporal 3 smoke and Temporal 4 carbon monoxide patterns. Dedicated smoke, CO, loop-status, and trouble indications make testing and service easier, while trigger inputs allow compatible panel outputs to coordinate alarms across the connected detector circuit.

As part of a complete smoke and carbon monoxide detection plan, Please verify resettable power, detector compatibility, EOL relay wiring, trigger behavior, panel zones, and local code requirements.

The module also reports loop faults, smoke-maintenance needs, CO trouble and end-of-life conditions, and freeze trouble from compatible detectors. EZ Walk testing helps verify loop communication, while synchronized Temporal 3 smoke and Temporal 4 CO sounder control gives occupants a clearer audible distinction between alarm types.

In a professionally monitored smoke detection system, Recommend confirming panel compatibility, detector count, loop resistance, EOL requirements, trigger programming, and code-compliant placement before commissioning.

That higher fixed threshold makes the 5602 useful in property-protection locations that normally run warmer than living or office spaces and where a smoke detector would be unsuitable. Exterior lettering identifies the temperature and activation method, and the external collector drops after an alarm so a technician can quickly locate the operated device.

The detector supports several common back boxes through its reversible bracket and uses straightforward 14-22 AWG terminal screws. Allied selects the model only after reviewing the normal ambient temperature, ceiling conditions, listed spacing reductions, and local requirements.

The rate-of-rise portion is restorable for field testing, while the fixed-temperature element is not. A dropped external collector makes an activated detector easier to identify during inspection. The plain white housing suits residential and light-commercial interiors, and a reversible bracket supports common single-gang, octagonal, and square back-box arrangements.

This detector is intended for property protection and is not a substitute for required life-safety smoke detection. Allied applies the listed spacing only after accounting for ceiling height, room conditions, local code, and the authority having jurisdiction. The normally open circuit and every detector location are tested before monitoring is activated.

Red and blue LEDs make the active hazard easy to identify. Smoke produces a temporal-three pattern, CO produces temporal four, and the integral 85 dBA sounder supplements the property’s listed notification appliances. Technicians can use RealTest canned-CO testing to exercise the actual gas cell, and the electrochemical module can be replaced at its typical ten-year end of life without discarding the complete detector.

A four-wire combination detector can be valuable when a property already has separate detector power and alarm conductors. We Recommend evaluating that wiring as part of the whole home security and life-safety system, then verify interface status, smoke and CO reporting, sounder behavior, reset, and monitoring response.

Its photoelectric chamber uses drift compensation and smoothing to maintain useful sensitivity as environmental conditions change. A restorable 135 F thermal element adds heat response, the red LED identifies a freeze-trouble condition below 41 F, and the built-in horn produces an 85 dBA temporal-three pattern during alarm.

When a system requires multiple i3 sounders to operate together, a compatible reversing and synchronization module is part of the design rather than an optional afterthought.

Test detector power, alarm contacts, end-of-line supervision, synchronized output, panel reset, and monitoring transmission together. This keeps the installation understandable for the customer and serviceable later.

The detector automatically compensates for gradual contamination in the optical chamber and uses smoothing algorithms to reject short disturbances. Its removable cover and chamber support scheduled cleaning, while the red and green LEDs make standby, out-of-sensitivity, and alarm conditions visible from the floor.

A pre-wired plug-in base helps service work stay orderly, but the circuit still needs a correct power-reset method and supervision arrangement. In an existing alarm system takeover, verify every conductor and end-of-line device before deciding whether a 4W-B is a compatible replacement. The completed zone is smoke-tested and confirmed at the panel and monitoring station.

Smoke events use a temporal-three tone and red LED; carbon-monoxide events use temporal four and a blue LED. RealTest allows a technician to verify that canned CO reaches and activates the sensing cell, while the field-replaceable CO module carries a typical ten-year end-of-life timer. Drift compensation and smoothing algorithms support stable smoke sensitivity, and the two-wire loop can use EZ Walk verification.

For homes and small businesses, one coordinated detector can reduce wall and ceiling clutter while preserving the correct monitored response for each hazard. It is Recommended to verify the interface-module capacity, listed panel connection, detector spacing, sounder behavior, and central-station signals before placing the zone in service.

An integral piezoelectric horn produces an 85 dBA temporal-three pattern during smoke alarm operation. With the proper reversing relay, compatible heads on the loop can sound together and remain synchronized. Drift compensation, smoothing algorithms, remote maintenance reporting, and the two-wire EZ Walk test help the service technician identify circuit and sensitivity issues without treating every visit as a blind search.

Panel compatibility and notification design must be verified before this detector is installed.

A pre-wirable base, inline terminals, broad back-box support, and Stop-Drop ‘N Lock head make installation and replacement more orderly. Green and red LEDs communicate standby, alarm, and maintenance conditions at a glance; with an i3-ready panel or 2W-MOD2, the detector can also report maintenance needs and participate in EZ Walk loop verification.

This is a system detector, not a standalone household alarm.