the Silent Knight SK
An Intelligent Multicriteria Smoke Detector
A patented photoelectric sensing chamber and dual thermistor heat
detector combine with an array of on-board software tools, to maximize
fire detection.
Combine all this with the features you’ve come to expect from Silent Knight smoke detectors—easy installation,
stable operation, RF/transient protection, and vandal-resistant locking—and it adds up to a flexible solution to
your fire protection needs.
The SK-Acclimate Multi criteria
Photoelectric Smoke Detector
incorporates both thermal and
photoelectric technologies that
interact to maximize detection.
An on-board microprocessor with
advanced software focuses on
rejecting nuisance alarms. The SKAcclimate is for use with Silent
Knight Intelliknight-series fire alarm
control panels (FACPs).
Using advanced software, SKAcclimate continuously samples the
air in the environment and adjusts
its detection parameters and alarm
threshold accordingly. And it does
this automatically, without user
A dual stage drift compensation
feature reduces maintenance
frequency. SK-Acclimate offsets the
effects of gradual dust build-up and
will notify the control panel before
its compensation level is reached,
allowing time for maintenance.
Once the compensation limit is
reached, a second signal is sent to
the control panel indicating an
urgent need for maintenance.
• Reliable analog communications for
trouble-free operation
Dual electronic thermistor design
6” mounting base included
Superior EMI resistance for
Microprocessor-based design to
provide maximum features
• Simple field cleaning for code
• 0.025” mesh bug screen to keep
unwanted insects out
• Variety of mounting options to
meet any application
• Dual LED indicators for 360°
• Detector transmits signal to
indicate maintenance is required
• Detector sensitivity increases in
hot fires
• Transient smoke conditions are
• Rotary address switches for fast
Height: 2.0” (51 mm)
Diameter: 6.1” (155 mm) installed
in B210LP base
Shipping Weight: 5.2 oz. (147 g)
Operating Voltage: 15–32 VDC
Standby Current:
-250 µA @ 24 VDC (no
communication LED off)
-300 µA @ 24 VDC (1
communication every 5 sec with
LED enabled)
LED Current: 6.5 [email protected] 24 VDC
max (when on)
(base included)
Operating Temperature: 32º –
100ºF (0ºC – 38ºC)
Humidity: 10% – 93% noncondensing
Other Ratings
Thermal: Fixed Temperature Set
point: 135ºF (57ºC)
Velocity: 0 – 4000 fpm (0 – 6.1
Insect Screen Hole Size: 0.025”
(0.64 mm) nominal
Model SK-Acclimate
Engineering Specifications
The contractor shall furnish and install where indicated on the plans, Multi criteria SK-Acclimate. Sensor shall
incorporate Photoelectric Smoke detection and a fixed temperature heat detector. The combination detector head,
and twist-lock base, shall be UL® listed compatible with Silent Knight’s IntelliKnight fire alarm control panels. The
base shall be the appropriate twist-lock base B210LP.
The detector shall have a flashing status LED for visual supervision. When the detector is actuated, the flashing
LED will latch on steady. The detector may be reset by actuating the control panel reset switch.
The calibration of the detector shall be capable of being selected and measured by the control panel without the
need for external test apparatus.The vandal-resistant, security locking feature shall be used in those areas as
indicated on the drawing. The locking feature shall be field selectable as required.
The SK-Acclimate shall automatically perform a functional test of the detector. The test method shall simulate effects
of products of combustion in the chamber to ensure testing of detector circuits.
RA100Z Remote LED Annunciator.
BCK-200B Black Detector Kit. For SK-series detectors.
RMK400 Recessed Mounting Kit. Provides low profile The SK-Acclimate is compatible with the following
for use with B501.
Intelliknight FACP’s:
XR2B Detector removal head. A removal and
replacement tool for SK plug-in detectors. Includes the 5808
Compatible Base:
(included) 6” Mounting Base
M02-09-00 Test Magnet with Telescoping Handle.
4” Mounting Base
6” Isolator Base
XP-4 Extension Pole for XR2B. Extends from 5 – 15 ft. B224BI
6” Relay Base
T55-127-000 Detector Removal Head.
B501BHT-2 6” Temporal Sounder Base
M02-04-01 Detector Test Magnet.
This document is not intended to be used for installation purposes. We try to keep
our product information up-to-date and accurate. We cannot cover all specific
applications or anticipate all requirements. All specifications are subject to change
without notice. For more information, contact Silent Knight 12 Clintonville Road,
Northford, CT 06472-1610. Phone: (800) 328-0103, Fax: (203) 484-7118.
FORM# 350121 Rev A
© 2009 Honeywell International Inc.
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