SYSTEMSENSOR A77-727-01

2012H Direct-Wire
Smoke Detector with
Built-in Relay and Horn
Model
2012H
Photoelectronic Detector
2012H
Photoelectronic
Smoke Detector
Required Accessory
A77-727-01
12 VDC power supply
(required for system to be
UL listed)
Product Overview
12 VDC operation, 4-wire
Built-in 85dB electronic horn with
temporal (3) tone
Compact, attractive, and easy to install, the System Sensor 2012H detector is
designed to respond to a broad range of fires while providing maximum stability. This
model also features low-voltage wiring making it ideal for applications such as apartment buildings and nursing homes.
Built-in, normally open relay can be
connected to lights, bells, horns,
or remote annunciator
Features. The System Sensor 2012H photoelectronic detector is designed prima-
Interconnectable up to 12 units
Visual alarm and power indicator
Ceiling white color
Built-in 8 second delay on relay output
Built-in test switch
Twist-on mounting bracket with
tamper option for easy installation
Rugged chamber design for greater
stability
3-year warranty
rily for applications where low-voltage Class 2 wiring may be used. This detector is non-latching and offers an 85dB alarm horn. The 2012H features the
NFPA72 required audible emergency evacuation signal referred to as temporal
(3) tone. An external push button provides a test of the detector's alarm function. Up to 12 units can be interconnected so that if one detector alarms, all
detectors alarm. A normally open auxiliary alarm relay with an 8 second delay
is available for controlling external functions. A visible LED indicator flashes
once every 30 seconds in standby and rapidly (every 0.5 seconds) in alarm
when detecting smoke. The detector offers low-voltage operation and a tamperproof feature. Screw terminals and a mounting bracket are provided for easy
installation.
General Specifications
Residential Smoke Detector Placement
Size
1.75″ H x 5.5″ dia.
(44.5 mm h x 140 mm dia.)
As defined in NFPA72 “Smoke detectors shall be installed outside of each separate
sleeping area in the immediate vicinity of the bedrooms and on each additional story
of the family living unit, including basements and excluding crawlspaces and unfinished attics. In new construction, a smoke detector shall also be installed in each
sleeping room”.
Weight
5.3 oz. (150 grams)
Humidity Range
10% to 93% RH, noncondensing
Electrical Ratings
Operating Voltage
12 VDC (nominal)
Standby Current
60 µA maximum average
Temperature Range
32° to 120°F (0° to 50°C)
Relay Contact Rating
1 Form A, .5 A @ 30 VDC
Alarm Current
20 mA maximum average @ 12 VDC
2012H Wiring Diagram
Maximum power bus length (in feet), given number
of units (maximum per bus) and wire size.
RED
Wire Gauge
14 AWG
16 AWG
18 AWG
1 Unit
5000
3735
2349
2 Units
2970
1867
1174
3 Units
1980
1245
783
4 Units
1485
933
587
5 Units
1188
747
469
6 Units
990
622
391
7 Units
848
533
335
8 Units
742
466
293
9 Units
660
415
261
10 Units
594
373
234
11 Units
540
339
213
12 Units
495
311
195
12VDC POWER
(–) SUPPLY
GRAY
SIGNAL
POWER INPUT
SIGNAL
BLACK
12OVAC
BLACK
(+) (–)
(+) (–)
(+) (–)
POWER INPUT
SIGNAL
POWER INPUT
GROUND
GROUND
GROUND
POWER INPUT
AUXILIARY
AUXILIARY
AUXILIARY
(+) (–)
(+) (–)
Maximum interconnect bus length:
5,000 FT., No. 18AWG or larger dual
conductor cable.
(+) A77-727-O1
SIGNAL
POWER INPUT
SIGNAL
(+) (–)
AUXILIARY
AUXILIARY
SIGNAL
POWER INPUT
GROUND
GROUND
GROUND
Auxiliary
Alarm Relay
AUXILIARY
All wiring must conform to local electrical codes.
Interconnect Up To
12 Detectors
Ordering Information
Part Number
Description
2012H
Photoelectronic smoke detector with relay, 12 VDC, multiple station
A77-727-01
12 VDC power supply, mounts to a 4″ square box, 2 1⁄8″ deep
System Sensor Sales and Service
System Sensor Headquarters
3825 Ohio Avenue
St. Charles, IL 60174
Ph: 800-SENSOR2
Fx: 630/377-6495
Documents On Demand
1-800-736-7672 x3
www.systemsensor.com
System Sensor Canada
Ph: 905.812.0767
Fx: 905.812.0771
System Sensor in China
Ph: 011.86.29.524.6253
Fx: 011.86.29.524.6259
System Sensor– Far East
Ph: 011.852.2191.9003
Fx: 011.852.2736.6580
System Sensor UK
Ph: 011.44.1403.276500
Fx: 011.44.1403.276501
System Sensor in Singapore
Ph: 011.65.273.2230
Fx: 011.65.273.2610
System Sensor– Australia
Ph: 011.613.54.281.142
Fx: 011.613.54.281.172
© 1999 System Sensor. The company reserves the right to change product specifications without notice.
A05-238-03•6/99(10K)•#475