SYSTEMSENSOR RMK400

200 Series
Intelligent Low Profile
Plug-in Detectors
The System Sensor 200 Series intelligent plug-in smoke
detectors with integral communication provide point
location for alarm communication and selective
maintenance.
Features
•Sleek, low-profile design
•Analog communications
•Low standby current
•Rotary address switches
•Superior EMI protection
•Dual LEDs for 360° visibility
Detector sensitivity can be programmed in the control panel
software. Sensitivity is continuously monitored and reported to the
panel. Point ID capability allows each detector address to be set
with decade address switches to provide exact detector locations
for selective maintenance when chamber contamination reaches an
unacceptable level.
The System Sensor 2251B photoelectric detector’s unique optical
sensing chamber is engineered to sense smoke produced by a wide
range of combustion sources. Dual electronic thermistors add 135°F
fixed temperature thermal sensing on the 2251TB model.
The Acclimate ™ 2251TMB photoelectric detector includes
thermal detection at 135 (degree sign)F. It uses advanced on-board
software to combine the signals from the photo and thermal
elements to create a true multicriteria detector. It is capable of
rejecting nuisance sources, but still responds quickly to real fires. The
Acclimate multicriteria detector has the capability of adjusting its
sensitivity according to its environment.
The 1251B ionization detector incorporates a unique single source,
dual chamber design to respond quickly and dependably to a broad
range of fires.
Agency Listings
Both the 5251B and 5251RB detectors use an innovative
thermistor sensing circuit to produce 135°F fixed and rate-of-rise
thermal detection in a low profile package. The 5251H model
provides fixed high temperature detection at 190ºF. These thermal
detectors provide cost effective, intelligent property protection in a
variety of applications.
200 Series Intelligent Detector Specifications
Physical/Operating Specifications
Height
Diameter
Shipping Weight
Operating Temperature Range
UL Listed Velocity Range
Operating Humidity Range
Thermal Ratings
Electrical Specifications
Voltage Range
Standby Current (max. avg.)
LED Current (max.)
2.0 in (51 mm)
6.1 in (155 mm) installed in B210LP base; 4.1 in (104 mm) installed in B501 base
Heat: 4.8 oz (136 g); Photo/Photo with Heat: 5.2 oz (147 g); Ion: 5.4 oz (153 g)
Ion/Photo: 32°F to 120°F (0°C to 49°C)
Photo with Thermal: 32°F to 100°F (0°C to 38°C)
Thermal: –4°F to 100°F (–20°C to 38°C)
High Temperature: –4°F to 150°F (–20°C to 66°C)
Ion: 0 to 1200 fpm (0 to 6.1 m/sec)
Photo/Photo with Thermal: 0 – 4000 fpm (0 – 20 m/sec) (suitable for installation in ducts)
10% to 93% noncondensing
Fixed Temperature Setpoint: 135°F (57°C)
Rate of Rise Detection: 15°F/min. (8.3°C/min.)
High Temperature Heat: 190ºF (88ºC)
15 to 32 volts DC peak
300 µA @ 24VDC (one communication every 5 seconds with LED enabled)
Photo/Photo with Thermal: 300 µA @ 24 VDC (one communication every 5 seconds with LED enabled)
6.5 mA @ 24 VDC (on)
Ordering Information
Part No.
2251B*
2251TB*
2251TMB*
1251B*
5251B*
5251RB*
5251H*
Bases
B501*
B210LP*
B501BH*
B501BH-2*
B501BHT*
B501BHT-2*
B224RB*
B224BI*
RMK400
SMK400
SMB600
Accessories
F110
RA400Z
M02-04-01
M02-09-00
XR2B
XP-4
T55-127-000
BCK-200B
WCK-2008
Description
Photoelectric smoke detector
Photoelectric smoke detector with thermal
Acclimate™ multicriteria smoke detector
Ionization smoke detector
Fixed temperature thermal detector
Rate-of-rise thermal detector
High temperature thermal detector
Flangeless mounting base
Flanged mounting base
Standard sounder base
Standard sounder base;
complies with UL864 9th edition
Temporal tone sounder base
Temporal tone sounder base;
complies with UL864 9th edition
Relay base
Isolator base
Recessed mounting kit
Flangeless surface mounting kit
Flanged surface mounting kit
Retrofit flange
Remote LED annunciator
Detector test magnet
Telescoping test magnet
Detector removal tool (T55-127-000 included)
Extension for XR2 (5 to 15 ft)
Detector removal head
Black detector kit (10 pack)**
White Detector Kit (10 pack)**
Accessories
RA400Z
Remote LED
Annunciator
Head also sold separately
(part no. T55-127-000)
XR2B
Detector
Removal Tool
* Add “A” for ULC listed product (e.g., 2251BA)
** The BCK-200B and WCK-200B are only applicable to the B210LP flanged style
mounting base and may only be used with 2251B (photoelectric) and 1251B
(ionization) smoke detectors.
3825 Ohio Avenue • St. Charles, IL 60174
Phone: 800-SENSOR2 • Fax: 630-377-6495
©2009 System Sensor.
Product specifications subject to change without notice. Visit systemsensor.com for
current product information, including the latest version of this data sheet.
A05-0362-002 • 3/09 • #2125