System Sensor Model 6424 Projected Beam Smoke Detector is uniquely suited
for protecting open areas with high ceilings where conventional spot type smoke
detectors are difficult to install and maintain. Listed for operation at the broadest
temperature range in the industry (–22°F to 131°F), the 6424 can be used in
garage or warehouse applications to provide early warning in environments
where temperature extremes exceed the capability of spot-type smoke detectors.
The 6424 consists of a transmitter and receiver with separate alarm and trouble
signals which distinguish between a percentage of signal blockage and a total
beam block. Four alignment LEDs on the front of each unit indicate signal
strength to ease alignment. The Remote Test Station with alarm LED indicator,
Model RTS451, is an accessory that mounts to a standard single gang box and
can test and reset the Beam Detector from a remote location.
30′ to 330′ protection range Broad operating temperature range (–22°F to 131°F) 4-wire 24 VDC operation Receiver and transmitter may be powered separately or together One EOL power relay supervises both receiver and transmitter Calibrated test filter included Ceiling and wall mount brackets included Alignment LEDs – No special tools required Built-in automatic gain control compensates for signal deterioration from dust build-up Remote test station option 3-year warranty
Voltage
20 to 32 VDC Maximum
Maximum Ripple Voltage
6.0v (peak to peak)
Standby Current (24 VDC)
10mA maximum
Alarm Current (24 VDC)
28.4mA maximum
Trouble Current (24 VDC)
27.1mA maximum
Start-up Surge Current (24 VDC)
19mA maximum
Relay Contacts Current (24 VDC)
.5A at 30VAC/DC
Reset Time
.6 seconds maximum
Start-up Time (after 5 min. reset)
1 minute maximum
Power Loss
Retain memory for 5 minutes minimum
Electrical (Transmitter) Specifications
Voltage
18.8 to 32 VDC
Maximum Ripple Voltage:
5.6v (peak to peak)
Current (24VDC)
10mA maximum
Mechanical Specifications
Dimensions w/no bracket
2.5″H x 8.5″W x 7″D
Dimensions w/ceiling mount bracket
5.5″H x 8.5″W x 7″D
Dimensions w/wall mount bracket
5.5″H x 8.5″W x 10″D
Weight
Receiver 1.5 lb (663 g)
Transmitter 1.3 lb (598 g)
Mounting
Separate ceiling and wall brackets
Wiring
Plug with attached cable