Honeywell BEAM1224 conventional beam smoke detector transceiver unit with optical alignment sighting scope

Honeywell BEAM1224 4 Wire Conventional Beam Smoke Detector

KTI07001001BDTR

Product Description

The Honeywell BEAM1224 is a 4-wire conventional reflected optical beam smoke detector engineered for open-area commercial and industrial fire protection with high ceiling clearances.

Make/Brand: Honeywell
Model: BEAM1224
Operating Voltage: 10.2 to 32.0 VDC
Protection Range: 5 m to 70 m (16 ft to 230 ft) standard; extendable up to 100 m (328 ft) using BEAMLRK long-range accessory kit
Sensitivity Settings: 6 user-selectable levels (4 fixed thresholds at 25%, 30%, 40%, 50% obscuration; 2 Acclimate self-adjusting settings at 30-50% and 40-50%)
Current Consumption (at 24 VDC): Standby: 17 mA max; Alarm: 38.5 mA max; Fault: 8.5 mA max; Alignment: 28 mA max
Alignment Aid: Optical sighting scope and integrated 2-digit signal strength digital display
Drift Compensation: Built-in Automatic Gain Control (AGC) compensates for optical dust buildup
Adjustment Range: +/- 10 degrees horizontal and vertical mechanical optical adjustment
Field Wiring: Removable plug-in screw terminal blocks (12 to 22 AWG)
System Compatibility: Compatible with standard 4-wire conventional fire panels and addressable monitor modules; supports RTS151 and RTS451 remote test stations
Operating Temperature: -30°C to 55°C (-22°F to 131°F); 10% to 93% RH non-condensing

KTI07001001BDTR

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Product Details
Available Brands	Honeywell
Unit	Numbers
HSN Code	85311020
Weight	0.12 kg
Dimension	L 8.4 x W 19.1 x H 25.4 cm cm ft in m
Warranty	12 Months Warranty
Tags/categories	Safety Fire Safety Solutions Fire Alarm System Addressable Fire Alarm System

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About this product .

The Honeywell BEAM1224 is a single-ended reflective beam smoke detector designed for industrial facilities and large public spaces where traditional point-type spot detectors are challenging to install, wire, or service. The system incorporates both the optical transmitter and receiver circuitry within a single rugged enclosure, targeting a passive retroreflective target mounted on the opposing wall.
Featuring an operational protection span of 5 to 70 meters (16 to 230 feet) out of the box, coverage can be extended up to 100 meters (328 feet) using an optional long-range reflector kit (BEAMLRK). The single-ended design restricts all power and zone wiring to the transceiver side, eliminating long cross-building cable runs and substantially lowering overall installation labor and conduit requirements.
To simplify commissioning, the BEAM1224 incorporates an optical gunsight targeting alignment tube alongside a 2-digit digital signal meter. Installers can rapidly orient the internal optical gimbal independent of the outer chassis across +/- 10 degrees both horizontally and vertically, adjusting coarse and fine thumbwheels to reach peak signal strength without needing external voltmeters or handheld diagnostic equipment.
The detector accommodates environmental fluctuations via six field-selectable sensitivity profiles, consisting of four fixed obscuration thresholds (25%, 30%, 40%, 50%) and two Acclimate auto-adjusting settings (30-50% and 40-50%). Built-in Automatic Gain Control (AGC) compensates for routine dust accumulation on lenses and reflectors over extended operational cycles.
Reliability is reinforced through intelligent fault detection. Rapid beam blockage exceeding 96% obscuration automatically triggers an obstruction trouble signal rather than a false alarm. Removable plug-in terminal blocks support clean wire terminations, while an architecturally neutral front cover can be painted to coordinate with interior designs.

Product Information .

Hospitals, Clinics Shopping Malls, Showrooms Government Buildings, Offices Banks Airports Railways, Bus Stations Conference Rooms Auditorium Conference Hall Production Floors Construction Sites

System Integration & Accessory Compatibility

The Honeywell System Sensor BEAM1224 series optical beam smoke detector is engineered as a 4-wire conventional device, allowing broad integration into industrial and commercial fire protection architectures. Because the device operates via standard dry-contact relay connections and continuous DC auxiliary power, it can interface seamlessly with dedicated conventional initiating device circuits (IDC) as well as modern addressable fire alarm systems via certified monitor modules.

Fire Alarm Control Panel (FACP) & Loop Interface

The detector interfaces with standard 4-wire conventional fire alarm control panels (FACPs) capable of supplying filtered DC auxiliary power within its rated operating range. For intelligent or addressable fire alarm control panels, integration is accomplished by connecting the detector’s independent alarm and trouble relay outputs to compatible addressable zone monitor or input interface modules on the signaling line circuit (SLC). This enables point-specific reporting on the central panel while leveraging conventional beam detection hardware across vast open spaces.

For proper system power budget calculations, the operating voltage range is 10.2 to 32.0 VDC for the standard BEAM1224 transceiver unit (15 to 32 VDC for BEAM1224S models). Maximum average current consumption at 24 VDC must be accounted for across all operating states: 17 mA in normal standby, 38.5 mA in alarm, 8.5 mA during fault conditions, and 28 mA when active in optical alignment mode.

Remote Test and Reset Stations

To support regular code-mandated testing in facilities with elevated ceilings where physical access to the transceiver is restricted, the BEAM1224 is fully compatible with external System Sensor remote stations. These stations provide remote testing and reset triggering from ground level:

RTS151 / RTS451: Remote test stations equipped with keyless test capability for localized verification.
RTS151KEY / RTS451KEY: Key-activated remote test and reset stations providing secure, authorized-only testing access.

Compatible Accessories & Hardware Extensions

The BEAM1224 architecture supports an array of modular system accessories designed to extend operating optical distances, support complex structural mountings, and prevent environmental condensation:

Accessory Model	Component Type	System Compatibility & Functional Scope
BEAMLRK	Long-Range Reflector Kit	Extends beam span from standard 16–230 ft (5–70 m) up to 328 ft (100 m) using a 15.7 in × 18.1 in (400 mm × 460 mm) assembly.
BEAMMMK	Multi-Mount Kit	Heavy-duty bracket enabling ceiling or wall installations where direct structural alignment requires expanded positioning flexibility.
BEAMSMK	Surface-Mount Kit	Enclosure bracket tailored for exposed conduit and surface raceway wiring applications.
BEAMHK	Transceiver Heater Kit	Internal thermal element mitigating optical condensation and frost formation on the transceiver window in unheated spaces.
BEAMHKR	Reflector Heater Kit	Surface heating element designed for the passive retroreflector to eliminate dew or frost accumulation on reflective prisms.

Field Termination & Wiring Specifications

Field wiring integration is executed via plug-in removable screw terminal blocks located within the transceiver housing. The terminal assembly accepts solid or stranded field conductors ranging from 12 AWG to 22 AWG. The passive reflector requires no electrical wiring, terminations, or auxiliary power supplies, ensuring single-ended cabling runs back to the initiating loop and power supply.

Installation Guidelines, Wiring, and Alignment

Installing the Honeywell System Sensor BEAM1224 conventional reflected optical beam smoke detector requires careful consideration of structural geometry, line-of-sight clearance, and electrical terminations. Because the detector features a single-ended reflective architecture, all active electrical wiring is confined to the transmitter/receiver transceiver unit. The passive retroreflector requires no power feeds or signaling connections, reducing labor and conduit costs across open industrial and commercial spaces.

Spatial Layout and Mounting Considerations

On smooth ceilings, projected beam detectors must be spaced between 30 and 60 feet (9.1 to 18.3 meters) apart. The maximum distance between a projected beam path and an adjacent sidewall must not exceed one-half of the selected beam spacing (15 to 30 feet). Transceiver units and retroreflectors should be mounted firmly to solid structural walls or supports to prevent beam drift caused by building deflection or vibration.

The standard 7.9-inch by 9.1-inch (200 mm by 230 mm) reflector supports operating spans from 16 to 230 feet (5 to 70 meters). For extended spans ranging from 230 to 328 feet (70 to 100 meters), the BEAMLRK long-range accessory kit—featuring a 15.7-inch by 18.1-inch (400 mm by 460 mm) 4-reflector assembly—must be installed. For complex mounting surfaces or irregular beam trajectories, installers can utilize the BEAMMMK multi-mount bracket or the BEAMSMK surface-mount kit. The unit also includes a paintable front trim cover to match specific interior aesthetics.

Field Wiring and Electrical Hookup

Field wiring terminates at plug-in removable screw terminal blocks designed to accommodate conductor sizes from 12 to 22 AWG. The BEAM1224 connects as a 4-wire conventional device to compatible fire alarm control panels supplying 10.2 to 32.0 VDC, or to addressable systems using conventional zone monitor/input modules.

Standby Current (24 VDC): 17 mA maximum average
Alarm Current (24 VDC): 38.5 mA maximum average
Fault Current (24 VDC): 8.5 mA maximum average
Alignment Mode Current (24 VDC): 28 mA maximum average
Remote Station Integration: Compatible with RTS151, RTS151KEY, RTS451, and RTS451KEY remote test and reset stations

For installations exposed to condensation, freezing, or high humidity (unit operating envelope is -30°C to 55°C and 10% to 93% RH non-condensing), the optional BEAMHK transmitter/receiver heater kit and BEAMHKR reflector heater kit should be wired to prevent optical dew formation.

Optical Sighting and Alignment Procedure

Alignment is executed directly at the transceiver without requiring specialized digital voltmeters or external test meters:

Coarse Optical Alignment: Look through the integrated optical sighting scope (gunsight) located behind the front cover. Adjust the independent horizontal and vertical mechanical thumbwheels (providing ±10 degrees of adjustment range) until the passive reflector is clearly centered in the gunsight view.
Digital Signal Metering: Activate alignment mode and observe the integrated 2-digit digital display. Turn the adjustment thumbwheels incrementally to peak the signal strength readout to the maximum obtainable numerical value.
Final Securement & Normal Mode: Once signal peaking is verified, exit alignment mode. The transceiver will calibrate its Automatic Gain Control (AGC) baseline. Observe the local status LEDs: the green LED flashes during normal standby operation, red indicates alarm, and yellow indicates trouble/fault (such as a 96% or greater beam blockage).

Maintenance, Testing, and Diagnostic Procedures

Routine maintenance of the Honeywell System Sensor BEAM1224 conventional reflected beam smoke detector ensures long-term operational stability across wide open areas such as warehouses, manufacturing plants, aircraft hangars, and atriums. The system incorporates self-monitoring hardware and field diagnostic features designed to simplify servicing, comply with NFPA 72 periodic testing mandates, and minimize false alarms caused by airborne particulate build-up.

Automatic Gain Control (AGC) and Dust Compensation

The BEAM1224 features built-in Automatic Gain Control (AGC) circuitry that continuously tracks optical signal levels between the transceiver and the retroreflector. Over extended operating cycles, dust and dirt accumulation on the optical lens or reflector surface degrades optical transmission. The AGC algorithm compensates for this gradual signal loss by automatically adjusting internal receiver gain, preventing false smoke alarms triggered by ambient particulate drift.

When dust accumulation exceeds the self-compensation limit of the AGC, the detector initiates an automatic fault signal. The local yellow LED illuminates and the remote trouble circuit activates to inform facility technicians that optical servicing is required. Maintenance personnel can easily detach the transceiver via plug-in removable terminal blocks (accommodating 12 to 22 AWG wiring) to clean external surfaces without disturbing system loop continuity.

Optical Cleaning and Field Alignment Verification

When an AGC threshold fault occurs, both the transceiver optical aperture and the passive retroreflector—either the standard 7.9-inch by 9.1-inch (200 mm x 230 mm) reflector or the extended BEAMLRK 15.7-inch by 18.1-inch (400 mm x 460 mm) assembly—must be cleaned using clean, non-abrasive cloths. Because the retroreflector requires no power or wiring, maintenance is limited solely to surface inspection and cleaning.

Following optical cleaning or physical building movement, alignment can be re-evaluated quickly:

Optical Sighting: Utilize the internal optical sighting scope (gunsight) to visually locate and center the retroreflector within the optical path.
Dual-Digit Display: Observe the integrated 2-digit digital signal strength meter directly on the transceiver unit. Alignment mode draws approximately 28 mA at 24 VDC.
Mechanical Adjustment: Adjust horizontal and vertical thumbwheels across an independent +/- 10-degree range without moving the main housing and without requiring specialized digital voltmeters.

Diagnostic Status Indicators and Trouble Conditions

Technicians can diagnose operational states at the unit or through control interface equipment via status LED indicators:

Normal Standby: Flashing green LED indicates operational line voltage (10.2 to 32.0 VDC) and clear line of sight, drawing a maximum average current of 17 mA at 24 VDC.
Alarm State: Latching local red LED illuminates when smoke reaches the configured obscuration threshold (25%, 30%, 40%, 50%, or Acclimate settings 30–50% / 40–50%), drawing up to 38.5 mA at 24 VDC.
Trouble / Fault State: Local yellow LED illuminates continuously (average current 8.5 mA at 24 VDC) if the AGC reaches its compensation limit or if rapid beam blockage equals or exceeds 96% obscuration. Sudden physical obstructions trigger a trouble alert instead of a false fire alarm.

NFPA 72 Testing Protocols and Condensation Control

Periodic sensitivity and operational testing can be conducted to meet NFPA 72 and CAN/ULC S524 maintenance standards using calibrated optical test filters placed across the retroreflector face, by actuating local test switches, or remotely by wiring the detector to RTS151, RTS151KEY, RTS451, or RTS451KEY remote test and reset stations. For BEAM1224S models, testing can also be performed via the integrated motorized servo test filter.

In unconditioned installations exposed to environmental moisture within the operating envelope of -30°C to 55°C (-22°F to 131°F) and 10% to 93% non-condensing relative humidity, field technicians can install optional BEAMHK (transceiver) and BEAMHKR (reflector) heating kits to prevent condensation and frost formation on optical lenses, preventing uncommanded beam attenuation.

Honeywell System Sensor BEAM1224 Industrial Applications and Deployment Scenarios

The Honeywell System Sensor BEAM1224 conventional reflected optical beam smoke detector is engineered specifically for open-area protection in large facilities where point-type (spot) smoke detectors are physically impractical, cost-prohibitive to cable, or hazardous to maintain. Because the optical transmitter and receiver are combined in a single enclosure paired with an unpowered passive retroreflector, all 4-wire power and signaling conduits are isolated to one wall.

High-Bay Warehouses and Logistics Distribution Centers

In high-ceiling warehouse environments with open racking, vertical clearance often exceeds 20 to 40 feet, rendering spot detectors inaccessible without scissor lifts or specialized boom equipment. The BEAM1224 provides an operational throw ranging from 16 to 230 feet (5 to 70 meters) using the included 7.9-inch by 9.1-inch retroreflector, and extends up to 328 feet (100 meters) when paired with the BEAMLRK long-range reflector kit.

Simplified Field Cabling: Requires 10.2 to 32.0 VDC wiring only at the transceiver unit; no wiring, conduit, or power is required across the facility at the reflector target.
Ceiling Coverage Compliance: Accommodates standard smooth-ceiling spacing between 30 and 60 feet between adjacent optical paths, with maximum sidewall spacing set at half the beam spacing.
Elevation Testing Access: Compatible with RTS151, RTS151KEY, RTS451, and RTS451KEY remote test stations, enabling ground-level annual NFPA 72 testing without requiring access equipment.

Aircraft Hangars and Heavy Manufacturing Plants

Industrial production halls and aircraft maintenance hangars feature wide clear spans, significant thermal air movements, and airborne contaminants that cause premature failures in conventional spot detectors. The BEAM1224 incorporates internal Automatic Gain Control (AGC) that continuously monitors baseline optical signal strength and compensates for slow dust and particulate accumulation over time.

For facilities where equipment, hoists, or overhead cranes momentarily cross the optical path, the detector prevents false alarms: an abrupt blockage causing 96% or greater obscuration automatically reports as a trouble/fault state rather than a fire alarm. System engineers can match site conditions using six selectable sensitivity settings:

Fixed Obscuration Modes: 25% (Level 1), 30% (Level 2), 40% (Level 3), and 50% (Level 4).
Acclimate Adaptive Modes: Acclimate 1 (30% to 50%) and Acclimate 2 (40% to 50%) automatically adjust sensitivity thresholds to ambient changes.

Commercial Atriums, Convention Centers, and Auditoriums

Public-facing atriums, arenas, and convention halls demand life-safety hardware that does not compromise interior aesthetics. The BEAM1224 features an integrated paintable trim cover that allows the transceiver housing to match interior design finishes. In addition, its independent optical alignment mechanism provides +/- 10 degrees horizontal and vertical adjustment without moving the base housing, guided by an internal gunsight and a 2-digit signal strength display for rapid commissioning.

Cold Storage, Unconditioned Structures, and High-Condensation Facilities

With a wide operating temperature envelope spanning -30°C to 55°C (-22°F to 131°F) and relative humidity tolerance from 10% to 93% non-condensing, the unit functions reliably in unheated industrial warehouses and cold-chain facilities. In applications where temperature swings cause optical dew or frost formation, optional BEAMHK and BEAMHKR internal heater kits can be installed in both the transceiver and reflector assemblies to ensure clear optical transmission.

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